231301320132 has 24 divisors (see below), whose sum is σ = 539712113472. Its totient is φ = 77099149600.

The previous prime is 231301320121. The next prime is 231301320143. The reversal of 231301320132 is 231023103132.

It is an interprime number because it is at equal distance from previous prime (231301320121) and next prime (231301320143).

It is a junction number, because it is equal to n+sod(n) for n = 231301320099 and 231301320108.

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, 828457 + ... + 1071887.

It is an arithmetic number, because the mean of its divisors is an integer number (22488004728).

Almost surely, 2^231301320132 is an apocalyptic number.

It is an amenable number.

231301320132 is an abundant number, since it is smaller than the sum of its proper divisors (308410793340).

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

231301320132 is a wasteful number, since it uses less digits than its factorization.

231301320132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322619 (or 322617 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 231301320132 its reverse (231023103132), we get a palindrome (462324423264).

The spelling of 231301320132 in words is "two hundred thirty-one billion, three hundred one million, three hundred twenty thousand, one hundred thirty-two".