232131101220 has 144 divisors (see below), whose sum is σ = 784790173440. Its totient is φ = 55194006528.

The previous prime is 232131101219. The next prime is 232131101231. The reversal of 232131101220 is 22101131232.

232131101220 is a `hidden beast` number, since 2 + 321 + 311 + 0 + 12 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 232131101193 and 232131101202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1938172 + ... + 2054451.

It is an arithmetic number, because the mean of its divisors is an integer number (5449931760).

Almost surely, 2^232131101220 is an apocalyptic number.

232131101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232131101220 is an abundant number, since it is smaller than the sum of its proper divisors (552659072220).

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

232131101220 is a wasteful number, since it uses less digits than its factorization.

232131101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3992674 (or 3992669 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 232131101220 its reverse (22101131232), we get a palindrome (254232232452).

The spelling of 232131101220 in words is "two hundred thirty-two billion, one hundred thirty-one million, one hundred one thousand, two hundred twenty".