31130233312 has 12 divisors (see below), whose sum is σ = 61287646896. Its totient is φ = 15565116640.

The previous prime is 31130233297. The next prime is 31130233331. The reversal of 31130233312 is 21333203113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486409864 + ... + 486409927.

It is an arithmetic number, because the mean of its divisors is an integer number (5107303908).

Almost surely, 2^31130233312 is an apocalyptic number.

31130233312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31130233312 is a deficient number, since it is larger than the sum of its proper divisors (30157413584).

31130233312 is an equidigital number, since it uses as much as digits as its factorization.

31130233312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972819801 (or 972819793 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31130233312 its reverse (21333203113), we get a palindrome (52463436425).

The spelling of 31130233312 in words is "thirty-one billion, one hundred thirty million, two hundred thirty-three thousand, three hundred twelve".