231101131200 has 168 divisors, whose sum is σ = 782663001600. Its totient is φ = 59638963200.

The previous prime is 231101131199. The next prime is 231101131201. The reversal of 231101131200 is 2131101132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231101131199) and next prime (231101131201).

It is a super-2 number, since 2×231101131200² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 231101131200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231101131201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 627750 + ... + 925349.

Almost surely, 2^231101131200 is an apocalyptic number.

231101131200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231101131200 is an abundant number, since it is smaller than the sum of its proper divisors (551561870400).

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

231101131200 is a wasteful number, since it uses less digits than its factorization.

231101131200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553155 (or 1553140 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 231101131200 its reverse (2131101132), we get a palindrome (233232232332).

The spelling of 231101131200 in words is "two hundred thirty-one billion, one hundred one million, one hundred thirty-one thousand, two hundred".