31303311223 has 8 divisors (see below), whose sum is σ = 32860776960. Its totient is φ = 29780075640.

The previous prime is 31303311209. The next prime is 31303311287. The reversal of 31303311223 is 32211330313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31303311223 - 2⁵ = 31303311191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31303311194 and 31303311203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31303311203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8555665 + ... + 8559322.

It is an arithmetic number, because the mean of its divisors is an integer number (4107597120).

Almost surely, 2^31303311223 is an apocalyptic number.

31303311223 is a deficient number, since it is larger than the sum of its proper divisors (1557465737).

31303311223 is a wasteful number, since it uses less digits than its factorization.

31303311223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17115077.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31303311223 its reverse (32211330313), we get a palindrome (63514641536).

The spelling of 31303311223 in words is "thirty-one billion, three hundred three million, three hundred eleven thousand, two hundred twenty-three".