31020313323232 has 48 divisors (see below), whose sum is σ = 62983562729472. Its totient is φ = 15030168209280.

The previous prime is 31020313323211. The next prime is 31020313323239. The reversal of 31020313323232 is 23232331302013.

It is a self number, because there is not a number n which added to its sum of digits gives 31020313323232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020313323239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88580494 + ... + 88929997.

It is an arithmetic number, because the mean of its divisors is an integer number (1312157556864).

Almost surely, 2^{31020313323232} is an apocalyptic number.

31020313323232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31020313323232 is an abundant number, since it is smaller than the sum of its proper divisors (31963249406240).

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

31020313323232 is a wasteful number, since it uses less digits than its factorization.

31020313323232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177510671 (or 177510663 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 31020313323232 its reverse (23232331302013), we get a palindrome (54252644625245).

The spelling of 31020313323232 in words is "thirty-one trillion, twenty billion, three hundred thirteen million, three hundred twenty-three thousand, two hundred thirty-two".