31311200220313 has 8 divisors (see below), whose sum is σ = 33721815044288. Its totient is φ = 28900879819344.

The previous prime is 31311200220283. The next prime is 31311200220317. The reversal of 31311200220313 is 31302200211313.

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

It is not a de Polignac number, because 31311200220313 - 2¹³ = 31311200212121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31311200220317) 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, 73384845 + ... + 73810282.

It is an arithmetic number, because the mean of its divisors is an integer number (4215226880536).

Almost surely, 2^{31311200220313} is an apocalyptic number.

It is an amenable number.

31311200220313 is a deficient number, since it is larger than the sum of its proper divisors (2410614823975).

31311200220313 is a wasteful number, since it uses less digits than its factorization.

31311200220313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147211503.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31311200220313 its reverse (31302200211313), we get a palindrome (62613400431626).

The spelling of 31311200220313 in words is "thirty-one trillion, three hundred eleven billion, two hundred million, two hundred twenty thousand, three hundred thirteen".