1031131002313 has 4 divisors (see below), whose sum is σ = 1031619460608. Its totient is φ = 1030642544020.

The previous prime is 1031131002301. The next prime is 1031131002329. The reversal of 1031131002313 is 3132001311301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031131002313 is a prime.

It is a super-2 number, since 2×1031131002313² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031131002373) 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, 244225981 + ... + 244230202.

It is an arithmetic number, because the mean of its divisors is an integer number (257904865152).

Almost surely, 2^{1031131002313} is an apocalyptic number.

It is an amenable number.

1031131002313 is a deficient number, since it is larger than the sum of its proper divisors (488458295).

1031131002313 is an equidigital number, since it uses as much as digits as its factorization.

1031131002313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488458294.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 1031131002313 its reverse (3132001311301), we get a palindrome (4163132313614).

The spelling of 1031131002313 in words is "one trillion, thirty-one billion, one hundred thirty-one million, two thousand, three hundred thirteen".