231402000 has 80 divisors (see below), whose sum is σ = 746059392. Its totient is φ = 61705600.

The previous prime is 231401999. The next prime is 231402013. The reversal of 231402000 is 204132.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13284 + ... + 25283.

Almost surely, 2^231402000 is an apocalyptic number.

231402000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231402000 is an abundant number, since it is smaller than the sum of its proper divisors (514657392).

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

231402000 is a wasteful number, since it uses less digits than its factorization.

231402000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38593 (or 38577 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 231402000 is about 15211.9032339809. The cubic root of 231402000 is about 613.9349667811.

Adding to 231402000 its reverse (204132), we get a palindrome (231606132).

The spelling of 231402000 in words is "two hundred thirty-one million, four hundred two thousand".