231969187032 has 128 divisors (see below), whose sum is σ = 675786965760. Its totient is φ = 65573150720.

The previous prime is 231969186991. The next prime is 231969187057. The reversal of 231969187032 is 230781969132.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 278443 + ... + 735845.

It is an arithmetic number, because the mean of its divisors is an integer number (5279585670).

Almost surely, 2^231969187032 is an apocalyptic number.

231969187032 is a gapful number since it is divisible by the number (22) 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 231969187032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337893482880).

231969187032 is an abundant number, since it is smaller than the sum of its proper divisors (443817778728).

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

231969187032 is a wasteful number, since it uses less digits than its factorization.

231969187032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457553 (or 457549 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 231969187032 in words is "two hundred thirty-one billion, nine hundred sixty-nine million, one hundred eighty-seven thousand, thirty-two".