131001231232 has 32 divisors (see below), whose sum is σ = 265903161480. Its totient is φ = 64264751616.

The previous prime is 131001231227. The next prime is 131001231259. The reversal of 131001231232 is 232132100131.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×131001231232² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9648378 + ... + 9661945.

Almost surely, 2^131001231232 is an apocalyptic number.

It is an amenable number.

131001231232 is an abundant number, since it is smaller than the sum of its proper divisors (134901930248).

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

131001231232 is an equidigital number, since it uses as much as digits as its factorization.

131001231232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19310390 (or 19310378 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 131001231232 its reverse (232132100131), we get a palindrome (363133331363).

The spelling of 131001231232 in words is "one hundred thirty-one billion, one million, two hundred thirty-one thousand, two hundred thirty-two".