231424402 has 16 divisors (see below), whose sum is σ = 378940032. Its totient is φ = 105124720.

The previous prime is 231424399. The next prime is 231424411. The reversal of 231424402 is 204424132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49623 + ... + 54085.

It is an arithmetic number, because the mean of its divisors is an integer number (23683752).

Almost surely, 2^231424402 is an apocalyptic number.

231424402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231424402 is a deficient number, since it is larger than the sum of its proper divisors (147515630).

231424402 is a wasteful number, since it uses less digits than its factorization.

231424402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6833.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 231424402 is about 15212.6395474290. The cubic root of 231424402 is about 613.9547777988.

Adding to 231424402 its reverse (204424132), we get a palindrome (435848534).

The spelling of 231424402 in words is "two hundred thirty-one million, four hundred twenty-four thousand, four hundred two".