22313421 has 32 divisors (see below), whose sum is σ = 35920640. Its totient is φ = 13608000.

The previous prime is 22313413. The next prime is 22313443. The reversal of 22313421 is 12431322.

It is not a de Polignac number, because 22313421 - 2³ = 22313413 is a prime.

It is a super-3 number, since 3×22313421³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22313394 and 22313403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22313411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52791 + ... + 53211.

It is an arithmetic number, because the mean of its divisors is an integer number (1122520).

Almost surely, 2^22313421 is an apocalyptic number.

It is an amenable number.

22313421 is a deficient number, since it is larger than the sum of its proper divisors (13607219).

22313421 is a wasteful number, since it uses less digits than its factorization.

22313421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 588 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 22313421 is about 4723.7083948948. The cubic root of 22313421 is about 281.5282969787.

Adding to 22313421 its reverse (12431322), we get a palindrome (34744743).

The spelling of 22313421 in words is "twenty-two million, three hundred thirteen thousand, four hundred twenty-one".