36399131 has 4 divisors (see below), whose sum is σ = 36808200. Its totient is φ = 35990064.

The previous prime is 36399107. The next prime is 36399137. The reversal of 36399131 is 13199363.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 36399131 - 2¹⁰ = 36398107 is a prime.

It is a super-2 number, since 2×36399131² = 2649793475110322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36399091 and 36399100.

It is not an unprimeable number, because it can be changed into a prime (36399137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204401 + ... + 204578.

It is an arithmetic number, because the mean of its divisors is an integer number (9202050).

Almost surely, 2^36399131 is an apocalyptic number.

36399131 is a deficient number, since it is larger than the sum of its proper divisors (409069).

36399131 is an equidigital number, since it uses as much as digits as its factorization.

36399131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409068.

The product of its digits is 13122, while the sum is 35.

The square root of 36399131 is about 6033.1692334958. The cubic root of 36399131 is about 331.4085219190.

The spelling of 36399131 in words is "thirty-six million, three hundred ninety-nine thousand, one hundred thirty-one".