31331002112 has 18 divisors (see below), whose sum is σ = 62539618008. Its totient is φ = 15665500928.

The previous prime is 31331002081. The next prime is 31331002141. The reversal of 31331002112 is 21120013313.

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, 61193108 + ... + 61193619.

Almost surely, 2^31331002112 is an apocalyptic number.

31331002112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31331002112 is a deficient number, since it is larger than the sum of its proper divisors (31208615896).

31331002112 is an equidigital number, since it uses as much as digits as its factorization.

31331002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122386743 (or 122386729 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31331002112 its reverse (21120013313), we get a palindrome (52451015425).

The spelling of 31331002112 in words is "thirty-one billion, three hundred thirty-one million, two thousand, one hundred twelve".