22323431 has 16 divisors (see below), whose sum is σ = 25782624. Its totient is φ = 19144704.

The previous prime is 22323421. The next prime is 22323437. The reversal of 22323431 is 13432322.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22323431 is a prime.

It is a super-3 number, since 3×22323431³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22323437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17735 + ... + 18951.

It is an arithmetic number, because the mean of its divisors is an integer number (1611414).

Almost surely, 2^22323431 is an apocalyptic number.

22323431 is a deficient number, since it is larger than the sum of its proper divisors (3459193).

22323431 is a wasteful number, since it uses less digits than its factorization.

22323431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330.

The product of its digits is 864, while the sum is 20.

The square root of 22323431 is about 4724.7678249836. The cubic root of 22323431 is about 281.5703893880.

Adding to 22323431 its reverse (13432322), we get a palindrome (35755753).

The spelling of 22323431 in words is "twenty-two million, three hundred twenty-three thousand, four hundred thirty-one".