231368380 has 48 divisors (see below), whose sum is σ = 514372320. Its totient is φ = 87268608.

The previous prime is 231368287. The next prime is 231368381. The reversal of 231368380 is 83863132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231368381) 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, 20302 + ... + 29578.

It is an arithmetic number, because the mean of its divisors is an integer number (10716090).

Almost surely, 2^231368380 is an apocalyptic number.

231368380 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 231368380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257186160).

231368380 is an abundant number, since it is smaller than the sum of its proper divisors (283003940).

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

231368380 is a wasteful number, since it uses less digits than its factorization.

231368380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9358 (or 9356 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 231368380 is about 15210.7981381649. The cubic root of 231368380 is about 613.9052328214.

The spelling of 231368380 in words is "two hundred thirty-one million, three hundred sixty-eight thousand, three hundred eighty".