31023321013111 has 4 divisors (see below), whose sum is σ = 35455224014992. Its totient is φ = 26591418011232.

The previous prime is 31023321013079. The next prime is 31023321013117. The reversal of 31023321013111 is 11131012332013.

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 31023321013111 - 2⁵ = 31023321013079 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 (31023321013117) 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, 2215951500930 + ... + 2215951500943.

It is an arithmetic number, because the mean of its divisors is an integer number (8863806003748).

Almost surely, 2^{31023321013111} is an apocalyptic number.

31023321013111 is a deficient number, since it is larger than the sum of its proper divisors (4431903001881).

31023321013111 is an equidigital number, since it uses as much as digits as its factorization.

31023321013111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4431903001880.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 31023321013111 its reverse (11131012332013), we get a palindrome (42154333345124).

The spelling of 31023321013111 in words is "thirty-one trillion, twenty-three billion, three hundred twenty-one million, thirteen thousand, one hundred eleven".