113531511113 has 2 divisors, whose sum is σ = 113531511114. Its totient is φ = 113531511112.

The previous prime is 113531511083. The next prime is 113531511131. The reversal of 113531511113 is 311115135311.

Together with next prime (113531511131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89235430729 + 24296080384 = 298723^2 + 155872^2 .

It is a cyclic number.

It is not a de Polignac number, because 113531511113 - 2⁸ = 113531510857 is a prime.

It is not a weakly prime, because it can be changed into another prime (113531511133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56765755556 + 56765755557.

It is an arithmetic number, because the mean of its divisors is an integer number (56765755557).

Almost surely, 2^113531511113 is an apocalyptic number.

It is an amenable number.

113531511113 is a deficient number, since it is larger than the sum of its proper divisors (1).

113531511113 is an equidigital number, since it uses as much as digits as its factorization.

113531511113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 675, while the sum is 26.

Adding to 113531511113 its reverse (311115135311), we get a palindrome (424646646424).

The spelling of 113531511113 in words is "one hundred thirteen billion, five hundred thirty-one million, five hundred eleven thousand, one hundred thirteen".