431102204402 has 4 divisors (see below), whose sum is σ = 646653306606. Its totient is φ = 215551102200.

The previous prime is 431102204359. The next prime is 431102204419. The reversal of 431102204402 is 204402201134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 374677427881 + 56424776521 = 612109^2 + 237539^2 .

It is a super-2 number, since 2×431102204402² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107775551099 + ... + 107775551102.

Almost surely, 2^431102204402 is an apocalyptic number.

431102204402 is a deficient number, since it is larger than the sum of its proper divisors (215551102204).

431102204402 is a wasteful number, since it uses less digits than its factorization.

431102204402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215551102203.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 431102204402 its reverse (204402201134), we get a palindrome (635504405536).

The spelling of 431102204402 in words is "four hundred thirty-one billion, one hundred two million, two hundred four thousand, four hundred two".