31331333001013 has 16 divisors (see below), whose sum is σ = 32482031616000. Its totient is φ = 30189667057200.

The previous prime is 31331333000983. The next prime is 31331333001091. The reversal of 31331333001013 is 31010033313313.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31331333001013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31331333001713) 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, 4317456 + ... + 9016822.

It is an arithmetic number, because the mean of its divisors is an integer number (2030126976000).

Almost surely, 2^{31331333001013} is an apocalyptic number.

It is an amenable number.

31331333001013 is a deficient number, since it is larger than the sum of its proper divisors (1150698614987).

31331333001013 is a wasteful number, since it uses less digits than its factorization.

31331333001013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4700328.

The product of its (nonzero) digits is 2187, while the sum is 25.

Adding to 31331333001013 its reverse (31010033313313), we get a palindrome (62341366314326).

The spelling of 31331333001013 in words is "thirty-one trillion, three hundred thirty-one billion, three hundred thirty-three million, one thousand, thirteen".