231157042 has 8 divisors (see below), whose sum is σ = 348496236. Its totient is φ = 114991632.

The previous prime is 231157039. The next prime is 231157067. The reversal of 231157042 is 240751132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 229249881 + 1907161 = 15141^2 + 1381^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 231156998 and 231157016.

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, 292953 + ... + 293740.

Almost surely, 2^231157042 is an apocalyptic number.

231157042 is a deficient number, since it is larger than the sum of its proper divisors (117339194).

231157042 is a wasteful number, since it uses less digits than its factorization.

231157042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586892.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 231157042 is about 15203.8495783140. The cubic root of 231157042 is about 613.7182567859.

The spelling of 231157042 in words is "two hundred thirty-one million, one hundred fifty-seven thousand, forty-two".