31013113130 has 8 divisors (see below), whose sum is σ = 55823603652. Its totient is φ = 12405245248.

The previous prime is 31013113121. The next prime is 31013113133. The reversal of 31013113130 is 3131131013.

It can be written as a sum of positive squares in 2 ways, for example, as 28102834321 + 2910278809 = 167639^2 + 53947^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31013113099 and 31013113108.

It is not an unprimeable number, because it can be changed into a prime (31013113133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1550655647 + ... + 1550655666.

Almost surely, 2^31013113130 is an apocalyptic number.

31013113130 is a deficient number, since it is larger than the sum of its proper divisors (24810490522).

31013113130 is a wasteful number, since it uses less digits than its factorization.

31013113130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101311320.

The product of its (nonzero) digits is 81, while the sum is 17.

Adding to 31013113130 its reverse (3131131013), we get a palindrome (34144244143).

The spelling of 31013113130 in words is "thirty-one billion, thirteen million, one hundred thirteen thousand, one hundred thirty".