231343402 has 16 divisors (see below), whose sum is σ = 357364224. Its totient is φ = 112252000.

The previous prime is 231343391. The next prime is 231343403. The reversal of 231343402 is 204343132.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (231343403) 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, 8277 + ... + 23047.

It is an arithmetic number, because the mean of its divisors is an integer number (22335264).

Almost surely, 2^231343402 is an apocalyptic number.

231343402 is a deficient number, since it is larger than the sum of its proper divisors (126020822).

231343402 is a wasteful number, since it uses less digits than its factorization.

231343402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15005.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 231343402 is about 15209.9770545521. The cubic root of 231343402 is about 613.8831400924.

Adding to 231343402 its reverse (204343132), we get a palindrome (435686534).

The spelling of 231343402 in words is "two hundred thirty-one million, three hundred forty-three thousand, four hundred two".