113101531 has 2 divisors, whose sum is σ = 113101532. Its totient is φ = 113101530.

The previous prime is 113101529. The next prime is 113101577. The reversal of 113101531 is 135101311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113101531 - 2¹ = 113101529 is a prime.

It is a super-2 number, since 2×113101531² = 25583912629087922, which contains 22 as substring.

Together with 113101529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (113101591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56550765 + 56550766.

It is an arithmetic number, because the mean of its divisors is an integer number (56550766).

Almost surely, 2^113101531 is an apocalyptic number.

113101531 is a deficient number, since it is larger than the sum of its proper divisors (1).

113101531 is an equidigital number, since it uses as much as digits as its factorization.

113101531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45, while the sum is 16.

The square root of 113101531 is about 10634.9203570126. The cubic root of 113101531 is about 483.6035659935.

Adding to 113101531 its reverse (135101311), we get a palindrome (248202842).

The spelling of 113101531 in words is "one hundred thirteen million, one hundred one thousand, five hundred thirty-one".