31310123223 has 8 divisors (see below), whose sum is σ = 41779527408. Its totient is φ = 20857067264.

The previous prime is 31310123203. The next prime is 31310123323. The reversal of 31310123223 is 32232101313.

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 31310123223 - 2⁵ = 31310123191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31310123223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31310123203) 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, 4082586 + ... + 4090247.

It is an arithmetic number, because the mean of its divisors is an integer number (5222440926).

Almost surely, 2^31310123223 is an apocalyptic number.

31310123223 is a deficient number, since it is larger than the sum of its proper divisors (10469404185).

31310123223 is a wasteful number, since it uses less digits than its factorization.

31310123223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8174113.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31310123223 its reverse (32232101313), we get a palindrome (63542224536).

The spelling of 31310123223 in words is "thirty-one billion, three hundred ten million, one hundred twenty-three thousand, two hundred twenty-three".