22938431 has 2 divisors, whose sum is σ = 22938432. Its totient is φ = 22938430.

The previous prime is 22938407. The next prime is 22938439. The reversal of 22938431 is 13483922.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22938431 - 2¹⁰ = 22937407 is a prime.

It is a super-2 number, since 2×22938431² = 1052343233483522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22938439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11469215 + 11469216.

It is an arithmetic number, because the mean of its divisors is an integer number (11469216).

Almost surely, 2^22938431 is an apocalyptic number.

22938431 is a deficient number, since it is larger than the sum of its proper divisors (1).

22938431 is an equidigital number, since it uses as much as digits as its factorization.

22938431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 22938431 is about 4789.4082097896. The cubic root of 22938431 is about 284.1327117300.

The spelling of 22938431 in words is "twenty-two million, nine hundred thirty-eight thousand, four hundred thirty-one".