231209160 has 256 divisors, whose sum is σ = 882524160. Its totient is φ = 47139840.

The previous prime is 231209149. The next prime is 231209171. The reversal of 231209160 is 61902132.

It is an interprime number because it is at equal distance from previous prime (231209149) and next prime (231209171).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 231209160.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 338179 + ... + 338861.

It is an arithmetic number, because the mean of its divisors is an integer number (3447360).

Almost surely, 2^231209160 is an apocalyptic number.

231209160 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 231209160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (441262080).

231209160 is an abundant number, since it is smaller than the sum of its proper divisors (651315000).

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

231209160 is a wasteful number, since it uses less digits than its factorization.

231209160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 231209160 is about 15205.5634555251. The cubic root of 231209160 is about 613.7643774726.

The spelling of 231209160 in words is "two hundred thirty-one million, two hundred nine thousand, one hundred sixty".