231547142 has 8 divisors (see below), whose sum is σ = 353874096. Its totient is φ = 113589112.

The previous prime is 231547139. The next prime is 231547159. The reversal of 231547142 is 241745132.

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

It is a super-3 number, since 3×231547142³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1092098 + ... + 1092309.

It is an arithmetic number, because the mean of its divisors is an integer number (44234262).

Almost surely, 2^231547142 is an apocalyptic number.

231547142 is a deficient number, since it is larger than the sum of its proper divisors (122326954).

231547142 is a wasteful number, since it uses less digits than its factorization.

231547142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184462.

The product of its digits is 6720, while the sum is 29.

The square root of 231547142 is about 15216.6731580855. The cubic root of 231547142 is about 614.0632991855.

The spelling of 231547142 in words is "two hundred thirty-one million, five hundred forty-seven thousand, one hundred forty-two".