31222111013323 has 4 divisors (see below), whose sum is σ = 31948206618328. Its totient is φ = 30496015408320.

The previous prime is 31222111013293. The next prime is 31222111013371. The reversal of 31222111013323 is 32331011122213.

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

It is a cyclic number.

It is not a de Polignac number, because 31222111013323 - 2²¹ = 31222108916171 is a prime.

It is a super-2 number, since 2×31222111013323² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31222111010323) 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, 363047802438 + ... + 363047802523.

It is an arithmetic number, because the mean of its divisors is an integer number (7987051654582).

Almost surely, 2^{31222111013323} is an apocalyptic number.

31222111013323 is a deficient number, since it is larger than the sum of its proper divisors (726095605005).

31222111013323 is an equidigital number, since it uses as much as digits as its factorization.

31222111013323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726095605004.

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

Adding to 31222111013323 its reverse (32331011122213), we get a palindrome (63553122135536).

The spelling of 31222111013323 in words is "thirty-one trillion, two hundred twenty-two billion, one hundred eleven million, thirteen thousand, three hundred twenty-three".