113142961 has 2 divisors, whose sum is σ = 113142962. Its totient is φ = 113142960.

The previous prime is 113142947. The next prime is 113143033. The reversal of 113142961 is 169241311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103408561 + 9734400 = 10169^2 + 3120^2 .

It is an emirp because it is prime and its reverse (169241311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113142961 - 2¹¹ = 113140913 is a prime.

It is not a weakly prime, because it can be changed into another prime (113142461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56571480 + 56571481.

It is an arithmetic number, because the mean of its divisors is an integer number (56571481).

Almost surely, 2^113142961 is an apocalyptic number.

It is an amenable number.

113142961 is a deficient number, since it is larger than the sum of its proper divisors (1).

113142961 is an equidigital number, since it uses as much as digits as its factorization.

113142961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 28.

The square root of 113142961 is about 10636.8680070780. The cubic root of 113142961 is about 483.6626080761.

The spelling of 113142961 in words is "one hundred thirteen million, one hundred forty-two thousand, nine hundred sixty-one".