31601331130 has 16 divisors (see below), whose sum is σ = 56898187560. Its totient is φ = 12637023232.

The previous prime is 31601331119. The next prime is 31601331169. The reversal of 31601331130 is 3113310613.

It can be written as a sum of positive squares in 4 ways, for example, as 6559218121 + 25042113009 = 80989^2 + 158247^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400675 + ... + 473014.

Almost surely, 2^31601331130 is an apocalyptic number.

31601331130 is a deficient number, since it is larger than the sum of its proper divisors (25296856430).

31601331130 is a wasteful number, since it uses less digits than its factorization.

31601331130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877313.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 31601331130 its reverse (3113310613), we get a palindrome (34714641743).

The spelling of 31601331130 in words is "thirty-one billion, six hundred one million, three hundred thirty-one thousand, one hundred thirty".