31130230312 has 16 divisors (see below), whose sum is σ = 59946727860. Its totient is φ = 15144436224.

The previous prime is 31130230291. The next prime is 31130230319. The reversal of 31130230312 is 21303203113.

It can be written as a sum of positive squares in 2 ways, for example, as 30566927556 + 563302756 = 174834^2 + 23734^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31130230312.

It is not an unprimeable number, because it can be changed into a prime (31130230319) 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, 52584553 + ... + 52585144.

Almost surely, 2^31130230312 is an apocalyptic number.

It is an amenable number.

31130230312 is a deficient number, since it is larger than the sum of its proper divisors (28816497548).

31130230312 is a wasteful number, since it uses less digits than its factorization.

31130230312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105169740 (or 105169736 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31130230312 its reverse (21303203113), we get a palindrome (52433433425).

The spelling of 31130230312 in words is "thirty-one billion, one hundred thirty million, two hundred thirty thousand, three hundred twelve".