22431423002 has 4 divisors (see below), whose sum is σ = 33647134506. Its totient is φ = 11215711500.

The previous prime is 22431422999. The next prime is 22431423017. The reversal of 22431423002 is 20032413422.

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., 15410491321 + 7020931681 = 124139^2 + 83791^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5607855749 + ... + 5607855752.

Almost surely, 2^22431423002 is an apocalyptic number.

22431423002 is a deficient number, since it is larger than the sum of its proper divisors (11215711504).

22431423002 is a wasteful number, since it uses less digits than its factorization.

22431423002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11215711503.

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

Adding to 22431423002 its reverse (20032413422), we get a palindrome (42463836424).

The spelling of 22431423002 in words is "twenty-two billion, four hundred thirty-one million, four hundred twenty-three thousand, two".