22245234531 has 16 divisors (see below), whose sum is σ = 31955933856. Its totient is φ = 13683350016.

The previous prime is 22245234509. The next prime is 22245234563. The reversal of 22245234531 is 13543254222.

It is a de Polignac number, because none of the positive numbers 2^k-22245234531 is a prime.

It is a super-2 number, since 2×22245234531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22245234492 and 22245234501.

It is not an unprimeable number, because it can be changed into a prime (22245234031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34950 + ... + 213803.

It is an arithmetic number, because the mean of its divisors is an integer number (1997245866).

Almost surely, 2^22245234531 is an apocalyptic number.

22245234531 is a deficient number, since it is larger than the sum of its proper divisors (9710699325).

22245234531 is a wasteful number, since it uses less digits than its factorization.

22245234531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251062.

The product of its digits is 57600, while the sum is 33.

Adding to 22245234531 its reverse (13543254222), we get a palindrome (35788488753).

The spelling of 22245234531 in words is "twenty-two billion, two hundred forty-five million, two hundred thirty-four thousand, five hundred thirty-one".