36381731 has 2 divisors, whose sum is σ = 36381732. Its totient is φ = 36381730.

The previous prime is 36381703. The next prime is 36381733. The reversal of 36381731 is 13718363.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36381731 - 2¹⁴ = 36365347 is a prime.

It is a super-2 number, since 2×36381731² = 2647260701112722, which contains 22 as substring.

Together with 36381733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (36381733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18190865 + 18190866.

It is an arithmetic number, because the mean of its divisors is an integer number (18190866).

Almost surely, 2^36381731 is an apocalyptic number.

36381731 is a deficient number, since it is larger than the sum of its proper divisors (1).

36381731 is an equidigital number, since it uses as much as digits as its factorization.

36381731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The square root of 36381731 is about 6031.7270329484. The cubic root of 36381731 is about 331.3557053889.

The spelling of 36381731 in words is "thirty-six million, three hundred eighty-one thousand, seven hundred thirty-one".