22431203402 has 8 divisors (see below), whose sum is σ = 34467459012. Its totient is φ = 10942050400.

The previous prime is 22431203387. The next prime is 22431203411. The reversal of 22431203402 is 20430213422.

22431203402 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 17561815441 + 4869387961 = 132521^2 + 69781^2 .

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, 136775549 + ... + 136775712.

Almost surely, 2^22431203402 is an apocalyptic number.

22431203402 is a deficient number, since it is larger than the sum of its proper divisors (12036255610).

22431203402 is a wasteful number, since it uses less digits than its factorization.

22431203402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273551304.

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

Adding to 22431203402 its reverse (20430213422), we get a palindrome (42861416824).

The spelling of 22431203402 in words is "twenty-two billion, four hundred thirty-one million, two hundred three thousand, four hundred two".