36991343 has 2 divisors, whose sum is σ = 36991344. Its totient is φ = 36991342.

The previous prime is 36991321. The next prime is 36991349. The reversal of 36991343 is 34319963.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36991343 - 2²⁴ = 20214127 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 36991297 and 36991306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36991349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18495671 + 18495672.

It is an arithmetic number, because the mean of its divisors is an integer number (18495672).

Almost surely, 2^36991343 is an apocalyptic number.

36991343 is a deficient number, since it is larger than the sum of its proper divisors (1).

36991343 is an equidigital number, since it uses as much as digits as its factorization.

36991343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 38.

The square root of 36991343 is about 6082.0508876529. The cubic root of 36991343 is about 333.1961948090.

The spelling of 36991343 in words is "thirty-six million, nine hundred ninety-one thousand, three hundred forty-three".