113531511361 has 2 divisors, whose sum is σ = 113531511362. Its totient is φ = 113531511360.

The previous prime is 113531511307. The next prime is 113531511367. The reversal of 113531511361 is 163115135311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76158888961 + 37372622400 = 275969^2 + 193320^2 .

It is a cyclic number.

It is not a de Polignac number, because 113531511361 - 2²¹ = 113529414209 is a prime.

It is not a weakly prime, because it can be changed into another prime (113531511367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56765755680 + 56765755681.

It is an arithmetic number, because the mean of its divisors is an integer number (56765755681).

Almost surely, 2^113531511361 is an apocalyptic number.

It is an amenable number.

113531511361 is a deficient number, since it is larger than the sum of its proper divisors (1).

113531511361 is an equidigital number, since it uses as much as digits as its factorization.

113531511361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4050, while the sum is 31.

Adding to 113531511361 its reverse (163115135311), we get a palindrome (276646646672).

The spelling of 113531511361 in words is "one hundred thirteen billion, five hundred thirty-one million, five hundred eleven thousand, three hundred sixty-one".