12220031031313 has 4 divisors (see below), whose sum is σ = 13965749750080. Its totient is φ = 10474312312548.

The previous prime is 12220031031217. The next prime is 12220031031331. The reversal of 12220031031313 is 31313013002221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-12220031031313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220031031613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 872859359373 + ... + 872859359386.

It is an arithmetic number, because the mean of its divisors is an integer number (3491437437520).

Almost surely, 2^{12220031031313} is an apocalyptic number.

It is an amenable number.

12220031031313 is a deficient number, since it is larger than the sum of its proper divisors (1745718718767).

12220031031313 is an equidigital number, since it uses as much as digits as its factorization.

12220031031313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745718718766.

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

Adding to 12220031031313 its reverse (31313013002221), we get a palindrome (43533044033534).

The spelling of 12220031031313 in words is "twelve trillion, two hundred twenty billion, thirty-one million, thirty-one thousand, three hundred thirteen".