231432101120 has 144 divisors (see below), whose sum is σ = 625602337920. Its totient is φ = 81255014400.

The previous prime is 231432101107. The next prime is 231432101123. The reversal of 231432101120 is 21101234132.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 231432101092 and 231432101101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231432101123) 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, 124925 + ... + 691715.

It is an arithmetic number, because the mean of its divisors is an integer number (4344460680).

Almost surely, 2^231432101120 is an apocalyptic number.

231432101120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231432101120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312801168960).

231432101120 is an abundant number, since it is smaller than the sum of its proper divisors (394170236800).

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

231432101120 is a wasteful number, since it uses less digits than its factorization.

231432101120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566852 (or 566838 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 231432101120 its reverse (21101234132), we get a palindrome (252533335252).

The spelling of 231432101120 in words is "two hundred thirty-one billion, four hundred thirty-two million, one hundred one thousand, one hundred twenty".