231246742 has 16 divisors (see below), whose sum is σ = 354201120. Its totient is φ = 113205312.

The previous prime is 231246727. The next prime is 231246749. The reversal of 231246742 is 247642132.

It is a happy number.

231246742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231246742² = 106950111371229128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231246749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12028 + ... + 24640.

It is an arithmetic number, because the mean of its divisors is an integer number (22137570).

Almost surely, 2^231246742 is an apocalyptic number.

231246742 is a deficient number, since it is larger than the sum of its proper divisors (122954378).

231246742 is a wasteful number, since it uses less digits than its factorization.

231246742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12807.

The product of its digits is 16128, while the sum is 31.

The square root of 231246742 is about 15206.7992029881. The cubic root of 231246742 is about 613.7976305426.

Adding to 231246742 its reverse (247642132), we get a palindrome (478888874).

The spelling of 231246742 in words is "two hundred thirty-one million, two hundred forty-six thousand, seven hundred forty-two".