231671442 has 8 divisors (see below), whose sum is σ = 463342896. Its totient is φ = 77223812.

The previous prime is 231671399. The next prime is 231671449. The reversal of 231671442 is 244176132.

231671442 is digitally balanced in base 2, 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.

231671442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (231671449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19305948 + ... + 19305959.

It is an arithmetic number, because the mean of its divisors is an integer number (57917862).

Almost surely, 2^231671442 is an apocalyptic number.

231671442 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.

231671442 is a wasteful number, since it uses less digits than its factorization.

231671442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38611912.

The product of its digits is 8064, while the sum is 30.

The square root of 231671442 is about 15220.7569456975. The cubic root of 231671442 is about 614.1731607790.

The spelling of 231671442 in words is "two hundred thirty-one million, six hundred seventy-one thousand, four hundred forty-two".