231502000 has 40 divisors (see below), whose sum is σ = 559776672. Its totient is φ = 92600000.

The previous prime is 231501979. The next prime is 231502001. The reversal of 231502000 is 205132.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (231502001) 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 7 ways as a sum of consecutive naturals, for example, 55876 + ... + 59875.

Almost surely, 2^231502000 is an apocalyptic number.

231502000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231502000 is an abundant number, since it is smaller than the sum of its proper divisors (328274672).

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

231502000 is a wasteful number, since it uses less digits than its factorization.

231502000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115774 (or 115758 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 231502000 is about 15215.1897786390. The cubic root of 231502000 is about 614.0233910458.

Adding to 231502000 its reverse (205132), we get a palindrome (231707132).

The spelling of 231502000 in words is "two hundred thirty-one million, five hundred two thousand".