231220211301313 has 12 divisors (see below), whose sum is σ = 250375493216640. Its totient is φ = 213433235726256.

The previous prime is 231220211301311. The next prime is 231220211301353. The reversal of 231220211301313 is 313103112022132.

231220211301313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231220211301313 - 2¹ = 231220211301311 is a prime.

It is a super-2 number, since 2×231220211301313² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231220211301311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44909368 + ... + 49792486.

It is an arithmetic number, because the mean of its divisors is an integer number (20864624434720).

Almost surely, 2^{231220211301313} is an apocalyptic number.

It is an amenable number.

231220211301313 is a deficient number, since it is larger than the sum of its proper divisors (19155281915327).

231220211301313 is a wasteful number, since it uses less digits than its factorization.

231220211301313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5163328 (or 5163315 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 231220211301313 its reverse (313103112022132), we get a palindrome (544323323323445).

The spelling of 231220211301313 in words is "two hundred thirty-one trillion, two hundred twenty billion, two hundred eleven million, three hundred one thousand, three hundred thirteen".