311231002232123 has 4 divisors (see below), whose sum is σ = 311231973683688. Its totient is φ = 311230030780560.

The previous prime is 311231002232071. The next prime is 311231002232177. The reversal of 311231002232123 is 321232200132113.

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 311231002232123 - 2²⁸ = 311230733796667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311231002232092 and 311231002232101.

It is not an unprimeable number, because it can be changed into a prime (311231002232723) 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, 485245058 + ... + 485886023.

It is an arithmetic number, because the mean of its divisors is an integer number (77807993420922).

Almost surely, 2^{311231002232123} is an apocalyptic number.

311231002232123 is a deficient number, since it is larger than the sum of its proper divisors (971451565).

311231002232123 is an equidigital number, since it uses as much as digits as its factorization.

311231002232123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971451564.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 311231002232123 its reverse (321232200132113), we get a palindrome (632463202364236).

The spelling of 311231002232123 in words is "three hundred eleven trillion, two hundred thirty-one billion, two million, two hundred thirty-two thousand, one hundred twenty-three".