231451000 has 128 divisors (see below), whose sum is σ = 603495360. Its totient is φ = 82368000.

The previous prime is 231450977. The next prime is 231451013. The reversal of 231451000 is 154132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 582802 + ... + 583198.

Almost surely, 2^231451000 is an apocalyptic number.

231451000 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 231451000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301747680).

231451000 is an abundant number, since it is smaller than the sum of its proper divisors (372044360).

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

231451000 is a wasteful number, since it uses less digits than its factorization.

231451000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 231451000 is about 15213.5137295761. The cubic root of 231451000 is about 613.9782978533.

The spelling of 231451000 in words is "two hundred thirty-one million, four hundred fifty-one thousand".