1320788880231 has 16 divisors (see below), whose sum is σ = 1915038887904. Its totient is φ = 806332161024.

The previous prime is 1320788880227. The next prime is 1320788880251. The reversal of 1320788880231 is 1320888870231.

It is not a de Polignac number, because 1320788880231 - 2² = 1320788880227 is a prime.

It is a super-2 number, since 2×1320788880231² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320788880211) 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, 349968670 + ... + 349972443.

It is an arithmetic number, because the mean of its divisors is an integer number (119689930494).

Almost surely, 2^{1320788880231} is an apocalyptic number.

1320788880231 is a deficient number, since it is larger than the sum of its proper divisors (594250007673).

1320788880231 is a wasteful number, since it uses less digits than its factorization.

1320788880231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699941170.

The product of its (nonzero) digits is 1032192, while the sum is 51.

The spelling of 1320788880231 in words is "one trillion, three hundred twenty billion, seven hundred eighty-eight million, eight hundred eighty thousand, two hundred thirty-one".