231403442 has 8 divisors (see below), whose sum is σ = 347770416. Its totient is φ = 115479972.

The previous prime is 231403429. The next prime is 231403453. The reversal of 231403442 is 244304132.

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

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, 109568 + ... + 111659.

It is an arithmetic number, because the mean of its divisors is an integer number (43471302).

Almost surely, 2^231403442 is an apocalyptic number.

231403442 is a deficient number, since it is larger than the sum of its proper divisors (116366974).

231403442 is a wasteful number, since it uses less digits than its factorization.

231403442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221752.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 231403442 is about 15211.9506310006. The cubic root of 231403442 is about 613.9362420400.

Adding to 231403442 its reverse (244304132), we get a palindrome (475707574).

The spelling of 231403442 in words is "two hundred thirty-one million, four hundred three thousand, four hundred forty-two".