31079538749 has 24 divisors (see below), whose sum is σ = 36427623840. Its totient is φ = 26438366304.

The previous prime is 31079538719. The next prime is 31079538769. The reversal of 31079538749 is 94783597013.

It is not a de Polignac number, because 31079538749 - 2²⁴ = 31062761533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31079538694 and 31079538703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31079538719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5244302 + ... + 5250224.

It is an arithmetic number, because the mean of its divisors is an integer number (1517817660).

Almost surely, 2^31079538749 is an apocalyptic number.

It is an amenable number.

31079538749 is a deficient number, since it is larger than the sum of its proper divisors (5348085091).

31079538749 is a wasteful number, since it uses less digits than its factorization.

31079538749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6729 (or 6722 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 31079538749 in words is "thirty-one billion, seventy-nine million, five hundred thirty-eight thousand, seven hundred forty-nine".