2031013221311 has 4 divisors (see below), whose sum is σ = 2031019051152. Its totient is φ = 2031007391472.

The previous prime is 2031013221257. The next prime is 2031013221329. The reversal of 2031013221311 is 1131223101302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2031013221311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031013221011) 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, 2356715 + ... + 3100988.

It is an arithmetic number, because the mean of its divisors is an integer number (507754762788).

Almost surely, 2^{2031013221311} is an apocalyptic number.

2031013221311 is a deficient number, since it is larger than the sum of its proper divisors (5829841).

2031013221311 is an equidigital number, since it uses as much as digits as its factorization.

2031013221311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5829840.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2031013221311 its reverse (1131223101302), we get a palindrome (3162236322613).

The spelling of 2031013221311 in words is "two trillion, thirty-one billion, thirteen million, two hundred twenty-one thousand, three hundred eleven".