231311313022 has 16 divisors (see below), whose sum is σ = 355867941744. Its totient is φ = 112695624000.

The previous prime is 231311313001. The next prime is 231311313043. The reversal of 231311313022 is 220313113132.

It is an interprime number because it is at equal distance from previous prime (231311313001) and next prime (231311313043).

It is a junction number, because it is equal to n+sod(n) for n = 231311312984 and 231311313002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1672629 + ... + 1805632.

It is an arithmetic number, because the mean of its divisors is an integer number (22241746359).

Almost surely, 2^231311313022 is an apocalyptic number.

231311313022 is a deficient number, since it is larger than the sum of its proper divisors (124556628722).

231311313022 is a wasteful number, since it uses less digits than its factorization.

231311313022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479115.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231311313022 its reverse (220313113132), we get a palindrome (451624426154).

The spelling of 231311313022 in words is "two hundred thirty-one billion, three hundred eleven million, three hundred thirteen thousand, twenty-two".