231011133103200 has 72 divisors (see below), whose sum is σ = 751941238258728. Its totient is φ = 61602968826880.

The previous prime is 231011133103193. The next prime is 231011133103207. The reversal of 231011133103200 is 2301331110132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231011133103193) and next prime (231011133103207).

It is a super-2 number, since 2×231011133103200² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231011133103207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48127316997 + ... + 48127321796.

It is an arithmetic number, because the mean of its divisors is an integer number (10443628309149).

Almost surely, 2^{231011133103200} is an apocalyptic number.

231011133103200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231011133103200 is an abundant number, since it is smaller than the sum of its proper divisors (520930105155528).

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

231011133103200 is a wasteful number, since it uses less digits than its factorization.

231011133103200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96254638816 (or 96254638803 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 231011133103200 its reverse (2301331110132), we get a palindrome (233312464213332).

The spelling of 231011133103200 in words is "two hundred thirty-one trillion, eleven billion, one hundred thirty-three million, one hundred three thousand, two hundred".