31349237493 has 24 divisors (see below), whose sum is σ = 49937459232. Its totient is φ = 17429688864.

The previous prime is 31349237477. The next prime is 31349237497. The reversal of 31349237493 is 39473294313.

It is not a de Polignac number, because 31349237493 - 2⁴ = 31349237477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31349237497) 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, 2876455 + ... + 2887332.

It is an arithmetic number, because the mean of its divisors is an integer number (2080727468).

Almost surely, 2^31349237493 is an apocalyptic number.

It is an amenable number.

31349237493 is a deficient number, since it is larger than the sum of its proper divisors (18588221739).

31349237493 is a wasteful number, since it uses less digits than its factorization.

31349237493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5763841 (or 5763834 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 48.

The spelling of 31349237493 in words is "thirty-one billion, three hundred forty-nine million, two hundred thirty-seven thousand, four hundred ninety-three".