22639031 has 2 divisors, whose sum is σ = 22639032. Its totient is φ = 22639030.

The previous prime is 22638971. The next prime is 22639033. The reversal of 22639031 is 13093622.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22639031 is a prime.

It is a super-2 number, since 2×22639031² = 1025051449237922, which contains 22 as substring.

Together with 22639033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22639033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11319515 + 11319516.

It is an arithmetic number, because the mean of its divisors is an integer number (11319516).

Almost surely, 2^22639031 is an apocalyptic number.

22639031 is a deficient number, since it is larger than the sum of its proper divisors (1).

22639031 is an equidigital number, since it uses as much as digits as its factorization.

22639031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 22639031 is about 4758.0490749886. The cubic root of 22639031 is about 282.8910958728.

The spelling of 22639031 in words is "twenty-two million, six hundred thirty-nine thousand, thirty-one".