39700013831 has 4 divisors (see below), whose sum is σ = 39792125664. Its totient is φ = 39607902000.

The previous prime is 39700013813. The next prime is 39700013863. The reversal of 39700013831 is 13831000793.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39700013831 is a prime.

It is a super-2 number, since 2×39700013831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39700013791 and 39700013800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39700013231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46055270 + ... + 46056131.

It is an arithmetic number, because the mean of its divisors is an integer number (9948031416).

Almost surely, 2^39700013831 is an apocalyptic number.

39700013831 is a deficient number, since it is larger than the sum of its proper divisors (92111833).

39700013831 is an equidigital number, since it uses as much as digits as its factorization.

39700013831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92111832.

The product of its (nonzero) digits is 13608, while the sum is 35.

The spelling of 39700013831 in words is "thirty-nine billion, seven hundred million, thirteen thousand, eight hundred thirty-one".