1040506831 has 16 divisors (see below), whose sum is σ = 1302336000. Its totient is φ = 809300448.

The previous prime is 1040506793. The next prime is 1040506837. The reversal of 1040506831 is 1386050401.

It is a cyclic number.

It is not a de Polignac number, because 1040506831 - 2⁹ = 1040506319 is a prime.

It is a super-2 number, since 2×1040506831² = 2165308930715325122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1040506831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040506837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91531 + ... + 102268.

It is an arithmetic number, because the mean of its divisors is an integer number (81396000).

Almost surely, 2^1040506831 is an apocalyptic number.

1040506831 is a deficient number, since it is larger than the sum of its proper divisors (261829169).

1040506831 is a wasteful number, since it uses less digits than its factorization.

1040506831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193878.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1040506831 is about 32256.8881171138. Note that the first 3 decimals coincide. The cubic root of 1040506831 is about 1013.3239606152.

The spelling of 1040506831 in words is "one billion, forty million, five hundred six thousand, eight hundred thirty-one".