1231317933152 has 96 divisors (see below), whose sum is σ = 2715850620000. Its totient is φ = 546101526528.

The previous prime is 1231317933121. The next prime is 1231317933179. The reversal of 1231317933152 is 2513397131321.

It is a happy number.

It is a super-2 number, since 2×1231317933152² (a number of 25 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 15 ways as a sum of consecutive naturals, for example, 1686224 + ... + 2303472.

It is an arithmetic number, because the mean of its divisors is an integer number (28290110625).

Almost surely, 2^{1231317933152} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231317933152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1357925310000).

1231317933152 is an abundant number, since it is smaller than the sum of its proper divisors (1484532686848).

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

1231317933152 is a wasteful number, since it uses less digits than its factorization.

1231317933152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617488 (or 617480 counting only the distinct ones).

The product of its digits is 102060, while the sum is 41.

The spelling of 1231317933152 in words is "one trillion, two hundred thirty-one billion, three hundred seventeen million, nine hundred thirty-three thousand, one hundred fifty-two".