2331135128 has 32 divisors (see below), whose sum is σ = 4996857600. Its totient is φ = 998744352.

The previous prime is 2331135113. The next prime is 2331135143. The reversal of 2331135128 is 8215311332.

It is an interprime number because it is at equal distance from previous prime (2331135113) and next prime (2331135143).

It is a self number, because there is not a number n which added to its sum of digits gives 2331135128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304613 + ... + 312171.

It is an arithmetic number, because the mean of its divisors is an integer number (156151800).

Almost surely, 2^2331135128 is an apocalyptic number.

2331135128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2331135128 is an abundant number, since it is smaller than the sum of its proper divisors (2665722472).

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

2331135128 is a wasteful number, since it uses less digits than its factorization.

2331135128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13079 (or 13075 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 2331135128 is about 48281.8302055753. The cubic root of 2331135128 is about 1325.9357582054.

The spelling of 2331135128 in words is "two billion, three hundred thirty-one million, one hundred thirty-five thousand, one hundred twenty-eight".