31201313101313 has 16 divisors (see below), whose sum is σ = 31895849373696. Its totient is φ = 30513952687680.

The previous prime is 31201313101271. The next prime is 31201313101369. The reversal of 31201313101313 is 31310131310213.

It is a cyclic number.

It is not a de Polignac number, because 31201313101313 - 2¹² = 31201313097217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31201313101513) 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, 48489395 + ... + 49128647.

It is an arithmetic number, because the mean of its divisors is an integer number (1993490585856).

Almost surely, 2^{31201313101313} is an apocalyptic number.

It is an amenable number.

31201313101313 is a deficient number, since it is larger than the sum of its proper divisors (694536272383).

31201313101313 is a wasteful number, since it uses less digits than its factorization.

31201313101313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644864.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 31201313101313 its reverse (31310131310213), we get a palindrome (62511444411526).

The spelling of 31201313101313 in words is "thirty-one trillion, two hundred one billion, three hundred thirteen million, one hundred one thousand, three hundred thirteen".