231212313123 has 64 divisors (see below), whose sum is σ = 344596460544. Its totient is φ = 137870304000.

The previous prime is 231212313119. The next prime is 231212313133. The reversal of 231212313123 is 321313212132.

It is not a de Polignac number, because 231212313123 - 2² = 231212313119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231212313093 and 231212313102.

It is not an unprimeable number, because it can be changed into a prime (231212313113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67348215 + ... + 67351647.

It is an arithmetic number, because the mean of its divisors is an integer number (5384319696).

Almost surely, 2^231212313123 is an apocalyptic number.

231212313123 is a deficient number, since it is larger than the sum of its proper divisors (113384147421).

231212313123 is a wasteful number, since it uses less digits than its factorization.

231212313123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737 (or 3715 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

Adding to 231212313123 its reverse (321313212132), we get a palindrome (552525525255).

It can be divided in two parts, 2312123 and 13123, that added together give a triangular number (2325246 = T₂₁₅₆).

The spelling of 231212313123 in words is "two hundred thirty-one billion, two hundred twelve million, three hundred thirteen thousand, one hundred twenty-three".