22000431 has 8 divisors (see below), whose sum is σ = 31059504. Its totient is φ = 13804160.

The previous prime is 22000427. The next prime is 22000441. The reversal of 22000431 is 13400022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22000431 - 2² = 22000427 is a prime.

It is a super-2 number, since 2×22000431² = 968037928371522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215640 + ... + 215741.

It is an arithmetic number, because the mean of its divisors is an integer number (3882438).

Almost surely, 2^22000431 is an apocalyptic number.

22000431 is a deficient number, since it is larger than the sum of its proper divisors (9059073).

22000431 is a wasteful number, since it uses less digits than its factorization.

22000431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431401.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 22000431 is about 4690.4617043528. The cubic root of 22000431 is about 280.2057628702.

Adding to 22000431 its reverse (13400022), we get a palindrome (35400453).

The spelling of 22000431 in words is "twenty-two million, four hundred thirty-one", and thus it is an aban number.