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40131030 = 2351337701
BaseRepresentation
bin1001100100010…
…1100111010110
32210111212102110
42121011213112
540233143110
63552051450
7665052042
oct231054726
983455373
1040131030
1120720045
1211533b86
138411394
145489022
1537caa20
hex26459d6

40131030 has 16 divisors (see below), whose sum is σ = 96314544. Its totient is φ = 10701600.

The previous prime is 40131029. The next prime is 40131043. The reversal of 40131030 is 3013104.

40131030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×401310302 = 3220999137721800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40130997 and 40131015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668821 + ... + 668880.

It is an arithmetic number, because the mean of its divisors is an integer number (6019659).

Almost surely, 240131030 is an apocalyptic number.

40131030 is an abundant number, since it is smaller than the sum of its proper divisors (56183514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40131030 is a wasteful number, since it uses less digits than its factorization.

40131030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337711.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 40131030 is about 6334.9056820130. The cubic root of 40131030 is about 342.3682125682.

Adding to 40131030 its reverse (3013104), we get a palindrome (43144134).

The spelling of 40131030 in words is "forty million, one hundred thirty-one thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 1337701 2675402 4013103 6688505 8026206 13377010 20065515 40131030