39700613731 has 2 divisors, whose sum is σ = 39700613732. Its totient is φ = 39700613730.

The previous prime is 39700613681. The next prime is 39700613759. The reversal of 39700613731 is 13731600793.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39700613731 - 2¹⁷ = 39700482659 is a prime.

It is a super-2 number, since 2×39700613731² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39700617731) 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 as a sum of consecutive naturals, namely, 19850306865 + 19850306866.

It is an arithmetic number, because the mean of its divisors is an integer number (19850306866).

Almost surely, 2^39700613731 is an apocalyptic number.

39700613731 is a deficient number, since it is larger than the sum of its proper divisors (1).

39700613731 is an equidigital number, since it uses as much as digits as its factorization.

39700613731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442, while the sum is 40.

The spelling of 39700613731 in words is "thirty-nine billion, seven hundred million, six hundred thirteen thousand, seven hundred thirty-one".