113531087 has 2 divisors, whose sum is σ = 113531088. Its totient is φ = 113531086.

The previous prime is 113531081. The next prime is 113531123. The reversal of 113531087 is 780135311.

It is a weak prime.

It is an emirp because it is prime and its reverse (780135311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113531087 - 2⁴ = 113531071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113531081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56765543 + 56765544.

It is an arithmetic number, because the mean of its divisors is an integer number (56765544).

Almost surely, 2^113531087 is an apocalyptic number.

113531087 is a deficient number, since it is larger than the sum of its proper divisors (1).

113531087 is an equidigital number, since it uses as much as digits as its factorization.

113531087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 113531087 is about 10655.0967616442. The cubic root of 113531087 is about 484.2150295018.

Adding to 113531087 its reverse (780135311), we get a palindrome (893666398).

The spelling of 113531087 in words is "one hundred thirteen million, five hundred thirty-one thousand, eighty-seven".