231422538 has 8 divisors (see below), whose sum is σ = 462845088. Its totient is φ = 77140844.

The previous prime is 231422537. The next prime is 231422549. The reversal of 231422538 is 835224132.

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

231422538 is an admirable number.

It is a super-2 number, since 2×231422538² = 107112782188722888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231422537) 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, 19285206 + ... + 19285217.

It is an arithmetic number, because the mean of its divisors is an integer number (57855636).

Almost surely, 2^231422538 is an apocalyptic number.

231422538 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.

231422538 is a wasteful number, since it uses less digits than its factorization.

231422538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38570428.

The product of its digits is 11520, while the sum is 30.

The square root of 231422538 is about 15212.5782824609. The cubic root of 231422538 is about 613.9531294351.

The spelling of 231422538 in words is "two hundred thirty-one million, four hundred twenty-two thousand, five hundred thirty-eight".