40250031 has 8 divisors (see below), whose sum is σ = 54188160. Its totient is φ = 26572632.

The previous prime is 40250029. The next prime is 40250047. The reversal of 40250031 is 13005204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40250031 - 2¹ = 40250029 is a prime.

It is a super-2 number, since 2×40250031² = 3240129991001922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40250011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64821 + ... + 65438.

It is an arithmetic number, because the mean of its divisors is an integer number (6773520).

Almost surely, 2^40250031 is an apocalyptic number.

40250031 is a deficient number, since it is larger than the sum of its proper divisors (13938129).

40250031 is a wasteful number, since it uses less digits than its factorization.

40250031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130365.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 40250031 is about 6344.2912133665. The cubic root of 40250031 is about 342.7062880742.

Adding to 40250031 its reverse (13005204), we get a palindrome (53255235).

The spelling of 40250031 in words is "forty million, two hundred fifty thousand, thirty-one".