231434442 has 32 divisors (see below), whose sum is σ = 532036800. Its totient is φ = 74484144.

The previous prime is 231434429. The next prime is 231434453. The reversal of 231434442 is 244434132.

It is a happy number.

231434442 is a `hidden beast` number, since 2 + 314 + 344 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72328 + ... + 75459.

It is an arithmetic number, because the mean of its divisors is an integer number (16626150).

Almost surely, 2^231434442 is an apocalyptic number.

231434442 is an abundant number, since it is smaller than the sum of its proper divisors (300602358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231434442 is a wasteful number, since it uses less digits than its factorization.

231434442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147827 (or 147821 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 231434442 is about 15212.9695326061. The cubic root of 231434442 is about 613.9636561723.

Adding to 231434442 its reverse (244434132), we get a palindrome (475868574).

The spelling of 231434442 in words is "two hundred thirty-one million, four hundred thirty-four thousand, four hundred forty-two".