131123232200 has 24 divisors (see below), whose sum is σ = 304861515330. Its totient is φ = 52449292800.

The previous prime is 131123232187. The next prime is 131123232221. The reversal of 131123232200 is 2232321131.

It can be written as a sum of positive squares in 3 ways, for example, as 122551805476 + 8571426724 = 350074^2 + 92582^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 327807881 + ... + 327808280.

Almost surely, 2^131123232200 is an apocalyptic number.

131123232200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131123232200 is an abundant number, since it is smaller than the sum of its proper divisors (173738283130).

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

131123232200 is a wasteful number, since it uses less digits than its factorization.

131123232200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655616177 (or 655616168 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131123232200 its reverse (2232321131), we get a palindrome (133355553331).

The spelling of 131123232200 in words is "one hundred thirty-one billion, one hundred twenty-three million, two hundred thirty-two thousand, two hundred".