22344431402 has 4 divisors (see below), whose sum is σ = 33516647106. Its totient is φ = 11172215700.

The previous prime is 22344431359. The next prime is 22344431407. The reversal of 22344431402 is 20413444322.

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., 22323646921 + 20784481 = 149411^2 + 4559^2 .

It is a super-2 number, since 2×22344431402² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22344431407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5586107849 + ... + 5586107852.

Almost surely, 2^22344431402 is an apocalyptic number.

22344431402 is a deficient number, since it is larger than the sum of its proper divisors (11172215704).

22344431402 is a wasteful number, since it uses less digits than its factorization.

22344431402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11172215703.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 22344431402 its reverse (20413444322), we get a palindrome (42757875724).

The spelling of 22344431402 in words is "twenty-two billion, three hundred forty-four million, four hundred thirty-one thousand, four hundred two".