40831061 has 4 divisors (see below), whose sum is σ = 42148224. Its totient is φ = 39513900.

The previous prime is 40831027. The next prime is 40831079. The reversal of 40831061 is 16013804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40831061 - 2¹⁸ = 40568917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40831001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658535 + ... + 658596.

It is an arithmetic number, because the mean of its divisors is an integer number (10537056).

Almost surely, 2^40831061 is an apocalyptic number.

It is an amenable number.

40831061 is a deficient number, since it is larger than the sum of its proper divisors (1317163).

40831061 is a wasteful number, since it uses less digits than its factorization.

40831061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317162.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 40831061 is about 6389.9187005783. The cubic root of 40831061 is about 344.3474636169.

Adding to 40831061 its reverse (16013804), we get a palindrome (56844865).

The spelling of 40831061 in words is "forty million, eight hundred thirty-one thousand, sixty-one".