22631435137 has 2 divisors, whose sum is σ = 22631435138. Its totient is φ = 22631435136.

The previous prime is 22631435129. The next prime is 22631435161. The reversal of 22631435137 is 73153413622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20599138576 + 2032296561 = 143524^2 + 45081^2 .

It is a cyclic number.

It is not a de Polignac number, because 22631435137 - 2³ = 22631435129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22631435096 and 22631435105.

It is not a weakly prime, because it can be changed into another prime (22631430137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11315717568 + 11315717569.

It is an arithmetic number, because the mean of its divisors is an integer number (11315717569).

Almost surely, 2^22631435137 is an apocalyptic number.

It is an amenable number.

22631435137 is a deficient number, since it is larger than the sum of its proper divisors (1).

22631435137 is an equidigital number, since it uses as much as digits as its factorization.

22631435137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 37.

Adding to 22631435137 its reverse (73153413622), we get a palindrome (95784848759).

The spelling of 22631435137 in words is "twenty-two billion, six hundred thirty-one million, four hundred thirty-five thousand, one hundred thirty-seven".