1213131023232 has 64 divisors (see below), whose sum is σ = 3234917984400. Its totient is φ = 402803523584.

The previous prime is 1213131023213. The next prime is 1213131023233. The reversal of 1213131023232 is 2323201313121.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213131023233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6047607 + ... + 6244982.

Almost surely, 2^{1213131023232} is an apocalyptic number.

1213131023232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213131023232 is an abundant number, since it is smaller than the sum of its proper divisors (2021786961168).

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

1213131023232 is a wasteful number, since it uses less digits than its factorization.

1213131023232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12292863 (or 12292851 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1213131023232 its reverse (2323201313121), we get a palindrome (3536332336353).

The spelling of 1213131023232 in words is "one trillion, two hundred thirteen billion, one hundred thirty-one million, twenty-three thousand, two hundred thirty-two".