22481831 has 2 divisors, whose sum is σ = 22481832. Its totient is φ = 22481830.

The previous prime is 22481813. The next prime is 22481887. The reversal of 22481831 is 13818422.

Together with previous prime (22481813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22481831 - 2¹⁴ = 22465447 is a prime.

It is a super-2 number, since 2×22481831² = 1010865450225122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22481794 and 22481803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22481801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11240915 + 11240916.

It is an arithmetic number, because the mean of its divisors is an integer number (11240916).

Almost surely, 2^22481831 is an apocalyptic number.

22481831 is a deficient number, since it is larger than the sum of its proper divisors (1).

22481831 is an equidigital number, since it uses as much as digits as its factorization.

22481831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 29.

The square root of 22481831 is about 4741.5009227037. The cubic root of 22481831 is about 282.2347984960.

The spelling of 22481831 in words is "twenty-two million, four hundred eighty-one thousand, eight hundred thirty-one".