231977088 has 256 divisors, whose sum is σ = 804249600. Its totient is φ = 64447488.

The previous prime is 231977071. The next prime is 231977089. The reversal of 231977088 is 880779132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231977089) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1040145 + ... + 1040367.

It is an arithmetic number, because the mean of its divisors is an integer number (3141600).

Almost surely, 2^231977088 is an apocalyptic number.

231977088 is a gapful number since it is divisible by the number (28) 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 231977088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402124800).

231977088 is an abundant number, since it is smaller than the sum of its proper divisors (572272512).

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

231977088 is a wasteful number, since it uses less digits than its factorization.

231977088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 231977088 is about 15230.7940699098. The cubic root of 231977088 is about 614.4431366198.

The spelling of 231977088 in words is "two hundred thirty-one million, nine hundred seventy-seven thousand, eighty-eight".