113155109 has 2 divisors, whose sum is σ = 113155110. Its totient is φ = 113155108.

The previous prime is 113155087. The next prime is 113155123. The reversal of 113155109 is 901551311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107702884 + 5452225 = 10378^2 + 2335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113155109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113155169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56577554 + 56577555.

It is an arithmetic number, because the mean of its divisors is an integer number (56577555).

Almost surely, 2^113155109 is an apocalyptic number.

It is an amenable number.

113155109 is a deficient number, since it is larger than the sum of its proper divisors (1).

113155109 is an equidigital number, since it uses as much as digits as its factorization.

113155109 is an odious number, because the sum of its binary digits is odd.

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

The square root of 113155109 is about 10637.4390245021. The cubic root of 113155109 is about 483.6799175138.

The spelling of 113155109 in words is "one hundred thirteen million, one hundred fifty-five thousand, one hundred nine".