231902000 has 160 divisors (see below), whose sum is σ = 623960064. Its totient is φ = 82656000.

The previous prime is 231901993. The next prime is 231902003. The reversal of 231902000 is 209132.

It is a self number, because there is not a number n which added to its sum of digits gives 231902000.

It is not an unprimeable number, because it can be changed into a prime (231902003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1825937 + ... + 1826063.

Almost surely, 2^231902000 is an apocalyptic number.

231902000 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 231902000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311980032).

231902000 is an abundant number, since it is smaller than the sum of its proper divisors (392058064).

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

231902000 is a wasteful number, since it uses less digits than its factorization.

231902000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 231902000 is about 15228.3288643239. The cubic root of 231902000 is about 614.3768336851.

The spelling of 231902000 in words is "two hundred thirty-one million, nine hundred two thousand".