36131917 has 2 divisors, whose sum is σ = 36131918. Its totient is φ = 36131916.

The previous prime is 36131903. The next prime is 36131923. The reversal of 36131917 is 71913163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22099401 + 14032516 = 4701^2 + 3746^2 .

It is a cyclic number.

It is not a de Polignac number, because 36131917 - 2⁷ = 36131789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36131717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18065958 + 18065959.

It is an arithmetic number, because the mean of its divisors is an integer number (18065959).

Almost surely, 2^36131917 is an apocalyptic number.

It is an amenable number.

36131917 is a deficient number, since it is larger than the sum of its proper divisors (1).

36131917 is an equidigital number, since it uses as much as digits as its factorization.

36131917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402, while the sum is 31.

The square root of 36131917 is about 6010.9830310857. The cubic root of 36131917 is about 330.5955483859.

The spelling of 36131917 in words is "thirty-six million, one hundred thirty-one thousand, nine hundred seventeen".