22423831 has 2 divisors, whose sum is σ = 22423832. Its totient is φ = 22423830.

The previous prime is 22423829. The next prime is 22423837. The reversal of 22423831 is 13832422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22423831 - 2¹ = 22423829 is a prime.

It is a super-2 number, since 2×22423831² = 1005656393433122, which contains 22 as substring.

Together with 22423829, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 22423796 and 22423805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22423837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11211915 + 11211916.

It is an arithmetic number, because the mean of its divisors is an integer number (11211916).

Almost surely, 2^22423831 is an apocalyptic number.

22423831 is a deficient number, since it is larger than the sum of its proper divisors (1).

22423831 is an equidigital number, since it uses as much as digits as its factorization.

22423831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 25.

The square root of 22423831 is about 4735.3807661053. The cubic root of 22423831 is about 281.9918806240.

The spelling of 22423831 in words is "twenty-two million, four hundred twenty-three thousand, eight hundred thirty-one".