1231317933151 has 8 divisors (see below), whose sum is σ = 1261584190944. Its totient is φ = 1201062823680.

The previous prime is 1231317933121. The next prime is 1231317933179. The reversal of 1231317933151 is 1513397131321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231317933151 - 2⁵ = 1231317933119 is a prime.

It is a super-2 number, since 2×1231317933151² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231317933121) 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, 2563251 + ... + 3005476.

It is an arithmetic number, because the mean of its divisors is an integer number (157698023868).

Almost surely, 2^{1231317933151} is an apocalyptic number.

1231317933151 is a deficient number, since it is larger than the sum of its proper divisors (30266257793).

1231317933151 is an equidigital number, since it uses as much as digits as its factorization.

1231317933151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5574161.

The product of its digits is 51030, while the sum is 40.

The spelling of 1231317933151 in words is "one trillion, two hundred thirty-one billion, three hundred seventeen million, nine hundred thirty-three thousand, one hundred fifty-one".