1031331113313 has 4 divisors (see below), whose sum is σ = 1375108151088. Its totient is φ = 687554075540.

The previous prime is 1031331113269. The next prime is 1031331113327. The reversal of 1031331113313 is 3133111331301.

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 not a de Polignac number, because 1031331113313 - 2³⁰ = 1030257371489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1031331111313) 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, 171888518883 + ... + 171888518888.

It is an arithmetic number, because the mean of its divisors is an integer number (343777037772).

Almost surely, 2^{1031331113313} is an apocalyptic number.

It is an amenable number.

1031331113313 is a deficient number, since it is larger than the sum of its proper divisors (343777037775).

1031331113313 is an equidigital number, since it uses as much as digits as its factorization.

1031331113313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343777037774.

The product of its (nonzero) digits is 729, while the sum is 24.

Adding to 1031331113313 its reverse (3133111331301), we get a palindrome (4164442444614).

The spelling of 1031331113313 in words is "one trillion, thirty-one billion, three hundred thirty-one million, one hundred thirteen thousand, three hundred thirteen".