22611287131 has 2 divisors, whose sum is σ = 22611287132. Its totient is φ = 22611287130.

The previous prime is 22611287119. The next prime is 22611287173. The reversal of 22611287131 is 13178211622.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22611287131 is a prime.

It is a super-2 number, since 2×22611287131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22611287731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11305643565 + 11305643566.

It is an arithmetic number, because the mean of its divisors is an integer number (11305643566).

Almost surely, 2^22611287131 is an apocalyptic number.

22611287131 is a deficient number, since it is larger than the sum of its proper divisors (1).

22611287131 is an equidigital number, since it uses as much as digits as its factorization.

22611287131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 34.

Adding to 22611287131 its reverse (13178211622), we get a palindrome (35789498753).

The spelling of 22611287131 in words is "twenty-two billion, six hundred eleven million, two hundred eighty-seven thousand, one hundred thirty-one".