1320023131231 has 8 divisors (see below), whose sum is σ = 1529263589024. Its totient is φ = 1115949104640.

The previous prime is 1320023131213. The next prime is 1320023131309. The reversal of 1320023131231 is 1321313200231.

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 1320023131231 - 2²⁹ = 1319486260319 is a prime.

It is a super-2 number, since 2×1320023131231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320023131631) 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, 1291607250 + ... + 1291608271.

It is an arithmetic number, because the mean of its divisors is an integer number (191157948628).

Almost surely, 2^{1320023131231} is an apocalyptic number.

1320023131231 is a deficient number, since it is larger than the sum of its proper divisors (209240457793).

1320023131231 is an equidigital number, since it uses as much as digits as its factorization.

1320023131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583215601.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1320023131231 its reverse (1321313200231), we get a palindrome (2641336331462).

The spelling of 1320023131231 in words is "one trillion, three hundred twenty billion, twenty-three million, one hundred thirty-one thousand, two hundred thirty-one".