231402 has 8 divisors (see below), whose sum is σ = 462816. Its totient is φ = 77132.

The previous prime is 231379. The next prime is 231409. The reversal of 231402 is 204132.

231402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

231402 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 231402.

It is not an unprimeable number, because it can be changed into a prime (231409) by changing a digit.

231402 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19278 + ... + 19289.

It is an arithmetic number, because the mean of its divisors is an integer number (57852).

2²³¹⁴⁰² is an apocalyptic number.

231402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

231402 is a wasteful number, since it uses less digits than its factorization.

231402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38572.

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

The square root of 231402 is about 481.0426176546. The cubic root of 231402 is about 61.3934966781.

Adding to 231402 its reverse (204132), we get a palindrome (435534).

The spelling of 231402 in words is "two hundred thirty-one thousand, four hundred two".