231025788 has 216 divisors, whose sum is σ = 733234320. Its totient is φ = 60963840.

The previous prime is 231025787. The next prime is 231025843. The reversal of 231025788 is 887520132.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231025787) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2044420 + ... + 2044532.

Almost surely, 2^231025788 is an apocalyptic number.

231025788 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 231025788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366617160).

231025788 is an abundant number, since it is smaller than the sum of its proper divisors (502208532).

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

231025788 is a wasteful number, since it uses less digits than its factorization.

231025788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 231025788 is about 15199.5324928104. The cubic root of 231025788 is about 613.6020757018.

The spelling of 231025788 in words is "two hundred thirty-one million, twenty-five thousand, seven hundred eighty-eight".