231013123132 has 24 divisors (see below), whose sum is σ = 464236899840. Its totient is φ = 99479334960.

The previous prime is 231013123129. The next prime is 231013123147. The reversal of 231013123132 is 231321310132.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 138164908 + ... + 138166579.

It is an arithmetic number, because the mean of its divisors is an integer number (19343204160).

Almost surely, 2^231013123132 is an apocalyptic number.

231013123132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231013123132 is an abundant number, since it is smaller than the sum of its proper divisors (233223776708).

231013123132 is a wasteful number, since it uses less digits than its factorization.

231013123132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276331521 (or 276331519 counting only the distinct ones).

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

Adding to 231013123132 its reverse (231321310132), we get a palindrome (462334433264).

The spelling of 231013123132 in words is "two hundred thirty-one billion, thirteen million, one hundred twenty-three thousand, one hundred thirty-two".