431421331402 has 32 divisors (see below), whose sum is σ = 670946918400. Its totient is φ = 207835642800.

The previous prime is 431421331387. The next prime is 431421331447. The reversal of 431421331402 is 204133124134.

It is a happy number.

It is a super-2 number, since 2×431421331402² (a number of 24 digits) contains 22 as substring.

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, 13020877 + ... + 13053967.

It is an arithmetic number, because the mean of its divisors is an integer number (20967091200).

Almost surely, 2^431421331402 is an apocalyptic number.

431421331402 is a deficient number, since it is larger than the sum of its proper divisors (239525586998).

431421331402 is a wasteful number, since it uses less digits than its factorization.

431421331402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34042.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 431421331402 its reverse (204133124134), we get a palindrome (635554455536).

The spelling of 431421331402 in words is "four hundred thirty-one billion, four hundred twenty-one million, three hundred thirty-one thousand, four hundred two".