231321230232132 has 48 divisors (see below), whose sum is σ = 544053792340800. Its totient is φ = 76493481773952.

The previous prime is 231321230232061. The next prime is 231321230232137. The reversal of 231321230232132 is 231232032123132.

It is a super-2 number, since 2×231321230232132² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231321230232132.

It is not an unprimeable number, because it can be changed into a prime (231321230232137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79738258 + ... + 82588329.

It is an arithmetic number, because the mean of its divisors is an integer number (11334454007100).

Almost surely, 2^{231321230232132} is an apocalyptic number.

It is an amenable number.

231321230232132 is an abundant number, since it is smaller than the sum of its proper divisors (312732562108668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231321230232132 is a wasteful number, since it uses less digits than its factorization.

231321230232132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162327540 (or 162327538 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 231321230232132 its reverse (231232032123132), we get a palindrome (462553262355264).

The spelling of 231321230232132 in words is "two hundred thirty-one trillion, three hundred twenty-one billion, two hundred thirty million, two hundred thirty-two thousand, one hundred thirty-two".