22045031 has 4 divisors (see below), whose sum is σ = 22055064. Its totient is φ = 22035000.

The previous prime is 22044991. The next prime is 22045087. The reversal of 22045031 is 13054022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22045031 is a prime.

It is a super-2 number, since 2×22045031² = 971966783581922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22045091) 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 3 ways as a sum of consecutive naturals, for example, 140 + ... + 6641.

It is an arithmetic number, because the mean of its divisors is an integer number (5513766).

Almost surely, 2^22045031 is an apocalyptic number.

22045031 is a deficient number, since it is larger than the sum of its proper divisors (10033).

22045031 is an equidigital number, since it uses as much as digits as its factorization.

22045031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10032.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 22045031 is about 4695.2136266628. The cubic root of 22045031 is about 280.3949825212.

Adding to 22045031 its reverse (13054022), we get a palindrome (35099053).

The spelling of 22045031 in words is "twenty-two million, forty-five thousand, thirty-one".