22311023 has 12 divisors (see below), whose sum is σ = 26559720. Its totient is φ = 18677232.

The previous prime is 22311019. The next prime is 22311043. The reversal of 22311023 is 32011322.

It is a happy number.

It is not a de Polignac number, because 22311023 - 2² = 22311019 is a prime.

It is a super-3 number, since 3×22311023³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22310989 and 22311007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22311043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3188 + ... + 7401.

It is an arithmetic number, because the mean of its divisors is an integer number (2213310).

Almost surely, 2^22311023 is an apocalyptic number.

22311023 is a deficient number, since it is larger than the sum of its proper divisors (4248697).

22311023 is a wasteful number, since it uses less digits than its factorization.

22311023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10646 (or 10639 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 22311023 is about 4723.4545620764. The cubic root of 22311023 is about 281.5182114335.

Adding to 22311023 its reverse (32011322), we get a palindrome (54322345).

The spelling of 22311023 in words is "twenty-two million, three hundred eleven thousand, twenty-three".