40530831 has 16 divisors (see below), whose sum is σ = 59356800. Its totient is φ = 24396320.

The previous prime is 40530827. The next prime is 40530863. The reversal of 40530831 is 13803504.

It is a cyclic number.

It is not a de Polignac number, because 40530831 - 2² = 40530827 is a prime.

It is a super-2 number, since 2×40530831² = 3285496523101122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40530821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 796 + ... + 9038.

It is an arithmetic number, because the mean of its divisors is an integer number (3709800).

Almost surely, 2^40530831 is an apocalyptic number.

40530831 is a deficient number, since it is larger than the sum of its proper divisors (18825969).

40530831 is a wasteful number, since it uses less digits than its factorization.

40530831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8406.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 40530831 is about 6366.3828819825. The cubic root of 40530831 is about 343.5013930943.

The spelling of 40530831 in words is "forty million, five hundred thirty thousand, eight hundred thirty-one".