31131130134 has 32 divisors (see below), whose sum is σ = 69363796320. Its totient is φ = 9248504832.

The previous prime is 31131130123. The next prime is 31131130169. The reversal of 31131130134 is 43103113113.

It is a self number, because there is not a number n which added to its sum of digits gives 31131130134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6879067 + ... + 6883590.

It is an arithmetic number, because the mean of its divisors is an integer number (2167618635).

Almost surely, 2^31131130134 is an apocalyptic number.

31131130134 is an abundant number, since it is smaller than the sum of its proper divisors (38232666186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31131130134 is a wasteful number, since it uses less digits than its factorization.

31131130134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13762704.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31131130134 its reverse (43103113113), we get a palindrome (74234243247).

The spelling of 31131130134 in words is "thirty-one billion, one hundred thirty-one million, one hundred thirty thousand, one hundred thirty-four".