113187197 has 2 divisors, whose sum is σ = 113187198. Its totient is φ = 113187196.

The previous prime is 113187167. The next prime is 113187211. The reversal of 113187197 is 791781311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109599961 + 3587236 = 10469^2 + 1894^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113187197 is a prime.

It is a super-2 number, since 2×113187197² = 25622683129433618, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113187197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113187167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56593598 + 56593599.

It is an arithmetic number, because the mean of its divisors is an integer number (56593599).

Almost surely, 2^113187197 is an apocalyptic number.

It is an amenable number.

113187197 is a deficient number, since it is larger than the sum of its proper divisors (1).

113187197 is an equidigital number, since it uses as much as digits as its factorization.

113187197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 38.

The square root of 113187197 is about 10638.9471753553. The cubic root of 113187197 is about 483.7256330939.

The spelling of 113187197 in words is "one hundred thirteen million, one hundred eighty-seven thousand, one hundred ninety-seven".