1313021112031 has 4 divisors (see below), whose sum is σ = 1317298054072. Its totient is φ = 1308744169992.

The previous prime is 1313021111981. The next prime is 1313021112041. The reversal of 1313021112031 is 1302111203131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1313021112031 - 2²⁵ = 1312987557599 is a prime.

It is a super-2 number, since 2×1313021112031² (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 (1313021112041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2138470560 + ... + 2138471173.

It is an arithmetic number, because the mean of its divisors is an integer number (329324513518).

Almost surely, 2^{1313021112031} is an apocalyptic number.

1313021112031 is a deficient number, since it is larger than the sum of its proper divisors (4276942041).

1313021112031 is an equidigital number, since it uses as much as digits as its factorization.

1313021112031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4276942040.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1313021112031 its reverse (1302111203131), we get a palindrome (2615132315162).

The spelling of 1313021112031 in words is "one trillion, three hundred thirteen billion, twenty-one million, one hundred twelve thousand, thirty-one".