13231013233128 has 32 divisors (see below), whose sum is σ = 34144550280960. Its totient is φ = 4268068784640.

The previous prime is 13231013233117. The next prime is 13231013233129. The reversal of 13231013233128 is 82133231013231.

It is a super-2 number, since 2×13231013233128² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13231013233129) 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, 8891809225 + ... + 8891810712.

It is an arithmetic number, because the mean of its divisors is an integer number (1067017196280).

Almost surely, 2^{13231013233128} is an apocalyptic number.

It is an amenable number.

13231013233128 is an abundant number, since it is smaller than the sum of its proper divisors (20913537047832).

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

13231013233128 is a wasteful number, since it uses less digits than its factorization.

13231013233128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17783619977 (or 17783619973 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

Adding to 13231013233128 its reverse (82133231013231), we get a palindrome (95364244246359).

The spelling of 13231013233128 in words is "thirteen trillion, two hundred thirty-one billion, thirteen million, two hundred thirty-three thousand, one hundred twenty-eight".