31312312352 has 24 divisors (see below), whose sum is σ = 63634701312. Its totient is φ = 15151118400.

The previous prime is 31312312351. The next prime is 31312312363. The reversal of 31312312352 is 25321321313.

It is not an unprimeable number, because it can be changed into a prime (31312312351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15781424 + ... + 15783407.

It is an arithmetic number, because the mean of its divisors is an integer number (2651445888).

Almost surely, 2^31312312352 is an apocalyptic number.

31312312352 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31312312352 is an abundant number, since it is smaller than the sum of its proper divisors (32322388960).

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

31312312352 is a wasteful number, since it uses less digits than its factorization.

31312312352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31564872 (or 31564864 counting only the distinct ones).

The product of its digits is 3240, while the sum is 26.

Adding to 31312312352 its reverse (25321321313), we get a palindrome (56633633665).

The spelling of 31312312352 in words is "thirty-one billion, three hundred twelve million, three hundred twelve thousand, three hundred fifty-two".