40527997931 has 2 divisors, whose sum is σ = 40527997932. Its totient is φ = 40527997930.

The previous prime is 40527997927. The next prime is 40527997933. The reversal of 40527997931 is 13979972504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40527997931 - 2² = 40527997927 is a prime.

It is a super-2 number, since 2×40527997931² (a number of 22 digits) contains 22 as substring.

Together with 40527997933, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40527997933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20263998965 + 20263998966.

It is an arithmetic number, because the mean of its divisors is an integer number (20263998966).

Almost surely, 2^40527997931 is an apocalyptic number.

40527997931 is a deficient number, since it is larger than the sum of its proper divisors (1).

40527997931 is an equidigital number, since it uses as much as digits as its factorization.

40527997931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4286520, while the sum is 56.

The spelling of 40527997931 in words is "forty billion, five hundred twenty-seven million, nine hundred ninety-seven thousand, nine hundred thirty-one".