31264130518 has 4 divisors (see below), whose sum is σ = 46896195780. Its totient is φ = 15632065258.

The previous prime is 31264130497. The next prime is 31264130519. The reversal of 31264130518 is 81503146213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81503146213 = 191 ⋅426718043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31264130519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7816032628 + ... + 7816032631.

It is an arithmetic number, because the mean of its divisors is an integer number (11724048945).

Almost surely, 2^31264130518 is an apocalyptic number.

31264130518 is a deficient number, since it is larger than the sum of its proper divisors (15632065262).

31264130518 is a wasteful number, since it uses less digits than its factorization.

31264130518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15632065261.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 31264130518 in words is "thirty-one billion, two hundred sixty-four million, one hundred thirty thousand, five hundred eighteen".