22413531 has 24 divisors (see below), whose sum is σ = 36812880. Its totient is φ = 12052992.

The previous prime is 22413529. The next prime is 22413539. The reversal of 22413531 is 13531422.

It is not a de Polignac number, because 22413531 - 2¹ = 22413529 is a prime.

It is a super-2 number, since 2×22413531² = 1004732743775922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 22413498 and 22413507.

It is not an unprimeable number, because it can be changed into a prime (22413539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1986 + ... + 6983.

It is an arithmetic number, because the mean of its divisors is an integer number (1533870).

Almost surely, 2^22413531 is an apocalyptic number.

22413531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22413531 is a deficient number, since it is larger than the sum of its proper divisors (14399349).

22413531 is a wasteful number, since it uses less digits than its factorization.

22413531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9003 (or 8996 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 22413531 is about 4734.2930834497. The cubic root of 22413531 is about 281.9486979761.

Adding to 22413531 its reverse (13531422), we get a palindrome (35944953).

The spelling of 22413531 in words is "twenty-two million, four hundred thirteen thousand, five hundred thirty-one".