231274742 has 4 divisors (see below), whose sum is σ = 346912116. Its totient is φ = 115637370.

The previous prime is 231274711. The next prime is 231274759. The reversal of 231274742 is 247472132.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 231274699 and 231274708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57818684 + ... + 57818687.

It is an arithmetic number, because the mean of its divisors is an integer number (86728029).

Almost surely, 2^231274742 is an apocalyptic number.

231274742 is a deficient number, since it is larger than the sum of its proper divisors (115637374).

231274742 is a wasteful number, since it uses less digits than its factorization.

231274742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115637373.

The product of its digits is 18816, while the sum is 32.

The square root of 231274742 is about 15207.7198159356. The cubic root of 231274742 is about 613.8224029854.

The spelling of 231274742 in words is "two hundred thirty-one million, two hundred seventy-four thousand, seven hundred forty-two".