31949294913 has 32 divisors (see below), whose sum is σ = 50938168320. Its totient is φ = 19717966080.

The previous prime is 31949294911. The next prime is 31949294929.

31949294913 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31949294913 - 2¹ = 31949294911 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31949294913.

It is not an unprimeable number, because it can be changed into a prime (31949294911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 542545 + ... + 598542.

It is an arithmetic number, because the mean of its divisors is an integer number (1591817760).

Almost surely, 2^31949294913 is an apocalyptic number.

It is an amenable number.

31949294913 is a deficient number, since it is larger than the sum of its proper divisors (18988873407).

31949294913 is a wasteful number, since it uses less digits than its factorization.

31949294913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141174 (or 1141168 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The spelling of 31949294913 in words is "thirty-one billion, nine hundred forty-nine million, two hundred ninety-four thousand, nine hundred thirteen".