31112434320 has 80 divisors (see below), whose sum is σ = 105216604992. Its totient is φ = 7542407680.

The previous prime is 31112434319. The next prime is 31112434321. The reversal of 31112434320 is 2343421113.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31112434319) and next prime (31112434321).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (31112434321) 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, 5889867 + ... + 5895146.

Almost surely, 2^31112434320 is an apocalyptic number.

31112434320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31112434320 is an abundant number, since it is smaller than the sum of its proper divisors (74104170672).

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

31112434320 is a wasteful number, since it uses less digits than its factorization.

31112434320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11785040 (or 11785034 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31112434320 its reverse (2343421113), we get a palindrome (33455855433).

The spelling of 31112434320 in words is "thirty-one billion, one hundred twelve million, four hundred thirty-four thousand, three hundred twenty".