40787006831 has 2 divisors, whose sum is σ = 40787006832. Its totient is φ = 40787006830.

The previous prime is 40787006803. The next prime is 40787006863. The reversal of 40787006831 is 13860078704.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40787006831 is a prime.

It is a super-2 number, since 2×40787006831² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40787006881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20393503415 + 20393503416.

It is an arithmetic number, because the mean of its divisors is an integer number (20393503416).

Almost surely, 2^40787006831 is an apocalyptic number.

40787006831 is a deficient number, since it is larger than the sum of its proper divisors (1).

40787006831 is an equidigital number, since it uses as much as digits as its factorization.

40787006831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 44.

The spelling of 40787006831 in words is "forty billion, seven hundred eighty-seven million, six thousand, eight hundred thirty-one".