31003131321313 has 8 divisors (see below), whose sum is σ = 31460736942432. Its totient is φ = 30548341735296.

The previous prime is 31003131321299. The next prime is 31003131321319. The reversal of 31003131321313 is 31312313130013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31003131321313 - 2⁹ = 31003131320801 is a prime.

It is a super-2 number, since 2×31003131321313² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31003131321319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703986595 + ... + 704030632.

It is an arithmetic number, because the mean of its divisors is an integer number (3932592117804).

Almost surely, 2^{31003131321313} is an apocalyptic number.

It is an amenable number.

31003131321313 is a deficient number, since it is larger than the sum of its proper divisors (457605621119).

31003131321313 is a wasteful number, since it uses less digits than its factorization.

31003131321313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408017551.

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 31003131321313 its reverse (31312313130013), we get a palindrome (62315444451326).

The spelling of 31003131321313 in words is "thirty-one trillion, three billion, one hundred thirty-one million, three hundred twenty-one thousand, three hundred thirteen".