131223101232 has 40 divisors (see below), whose sum is σ = 341431827520. Its totient is φ = 43426347840.

The previous prime is 131223101227. The next prime is 131223101249. The reversal of 131223101232 is 232101322131.

It is a junction number, because it is equal to n+sod(n) for n = 131223101199 and 131223101208.

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, 9827194 + ... + 9840537.

It is an arithmetic number, because the mean of its divisors is an integer number (8535795688).

Almost surely, 2^131223101232 is an apocalyptic number.

131223101232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131223101232 is an abundant number, since it is smaller than the sum of its proper divisors (210208726288).

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

131223101232 is a wasteful number, since it uses less digits than its factorization.

131223101232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19667881 (or 19667875 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 131223101232 its reverse (232101322131), we get a palindrome (363324423363).

The spelling of 131223101232 in words is "one hundred thirty-one billion, two hundred twenty-three million, one hundred one thousand, two hundred thirty-two".