31330232013102 has 128 divisors (see below), whose sum is σ = 71922510144000. Its totient is φ = 9010014881280.

The previous prime is 31330232013029. The next prime is 31330232013107. The reversal of 31330232013102 is 20131023203313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31330232013107) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1087350048 + ... + 1087378860.

It is an arithmetic number, because the mean of its divisors is an integer number (561894610500).

Almost surely, 2^{31330232013102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31330232013102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35961255072000).

31330232013102 is an abundant number, since it is smaller than the sum of its proper divisors (40592278130898).

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

31330232013102 is a wasteful number, since it uses less digits than its factorization.

31330232013102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38546.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 31330232013102 its reverse (20131023203313), we get a palindrome (51461255216415).

The spelling of 31330232013102 in words is "thirty-one trillion, three hundred thirty billion, two hundred thirty-two million, thirteen thousand, one hundred two".