131212001023040 has 112 divisors (see below), whose sum is σ = 366735010040832. Its totient is φ = 43771107649536.

The previous prime is 131212001022961. The next prime is 131212001023049. The reversal of 131212001023040 is 40320100212131.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×131212001023040² (a number of 29 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (131212001023049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 791495312 + ... + 791661071.

Almost surely, 2^{131212001023040} is an apocalyptic number.

131212001023040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131212001023040 is an abundant number, since it is smaller than the sum of its proper divisors (235523009017792).

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

131212001023040 is a wasteful number, since it uses less digits than its factorization.

131212001023040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583156444 (or 1583156434 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 131212001023040 its reverse (40320100212131), we get a palindrome (171532101235171).

The spelling of 131212001023040 in words is "one hundred thirty-one trillion, two hundred twelve billion, one million, twenty-three thousand, forty".