1031331332013 has 4 divisors (see below), whose sum is σ = 1375108442688. Its totient is φ = 687554221340.

The previous prime is 1031331331967. The next prime is 1031331332023. The reversal of 1031331332013 is 3102331331301.

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 1031331332013 - 2⁶ = 1031331331949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031331332023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171888555333 + ... + 171888555338.

It is an arithmetic number, because the mean of its divisors is an integer number (343777110672).

Almost surely, 2^{1031331332013} is an apocalyptic number.

It is an amenable number.

1031331332013 is a deficient number, since it is larger than the sum of its proper divisors (343777110675).

1031331332013 is an equidigital number, since it uses as much as digits as its factorization.

1031331332013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343777110674.

The product of its (nonzero) digits is 1458, while the sum is 24.

Adding to 1031331332013 its reverse (3102331331301), we get a palindrome (4133662663314).

The spelling of 1031331332013 in words is "one trillion, thirty-one billion, three hundred thirty-one million, three hundred thirty-two thousand, thirteen".