31131110234 has 32 divisors (see below), whose sum is σ = 56187281280. Its totient is φ = 12637259712.

The previous prime is 31131110233. The next prime is 31131110281. The reversal of 31131110234 is 43201113113.

It is not an unprimeable number, because it can be changed into a prime (31131110233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2134832 + ... + 2149364.

It is an arithmetic number, because the mean of its divisors is an integer number (1755852540).

Almost surely, 2^31131110234 is an apocalyptic number.

31131110234 is a deficient number, since it is larger than the sum of its proper divisors (25056171046).

31131110234 is a wasteful number, since it uses less digits than its factorization.

31131110234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22614.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31131110234 its reverse (43201113113), we get a palindrome (74332223347).

The spelling of 31131110234 in words is "thirty-one billion, one hundred thirty-one million, one hundred ten thousand, two hundred thirty-four".