231123511032 has 64 divisors (see below), whose sum is σ = 578833706880. Its totient is φ = 76904648832.

The previous prime is 231123511013. The next prime is 231123511043. The reversal of 231123511032 is 230115321132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 231123510993 and 231123511011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39552703 + ... + 39558545.

It is an arithmetic number, because the mean of its divisors is an integer number (9044276670).

Almost surely, 2^231123511032 is an apocalyptic number.

It is an amenable number.

231123511032 is an abundant number, since it is smaller than the sum of its proper divisors (347710195848).

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

231123511032 is a wasteful number, since it uses less digits than its factorization.

231123511032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8492 (or 8488 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 231123511032 its reverse (230115321132), we get a palindrome (461238832164).

The spelling of 231123511032 in words is "two hundred thirty-one billion, one hundred twenty-three million, five hundred eleven thousand, thirty-two".