231142000 has 40 divisors (see below), whose sum is σ = 558906192. Its totient is φ = 92456000.

The previous prime is 231141959. The next prime is 231142003. The reversal of 231142000 is 241132.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231142003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55786 + ... + 59785.

Almost surely, 2^231142000 is an apocalyptic number.

231142000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231142000 is an abundant number, since it is smaller than the sum of its proper divisors (327764192).

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

231142000 is a wasteful number, since it uses less digits than its factorization.

231142000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115594 (or 115578 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 231142000 is about 15203.3548929175. The cubic root of 231142000 is about 613.7049444072.

Adding to 231142000 its reverse (241132), we get a palindrome (231383132).

The spelling of 231142000 in words is "two hundred thirty-one million, one hundred forty-two thousand".