131020233012 has 72 divisors (see below), whose sum is σ = 332292859080. Its totient is φ = 43528181760.

The previous prime is 131020233007. The next prime is 131020233119. The reversal of 131020233012 is 210332020131.

131020233012 is a `hidden beast` number, since 1 + 310 + 20 + 2 + 330 + 1 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 118450235556 + 12569997456 = 344166^2 + 112116^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20212812 + ... + 20219292.

Almost surely, 2^131020233012 is an apocalyptic number.

131020233012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131020233012 is an abundant number, since it is smaller than the sum of its proper divisors (201272626068).

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

131020233012 is a wasteful number, since it uses less digits than its factorization.

131020233012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8273 (or 8268 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 131020233012 its reverse (210332020131), we get a palindrome (341352253143).

The spelling of 131020233012 in words is "one hundred thirty-one billion, twenty million, two hundred thirty-three thousand, twelve".