36640131 has 12 divisors (see below), whose sum is σ = 53699016. Its totient is φ = 22205920.

The previous prime is 36640129. The next prime is 36640133. The reversal of 36640131 is 13104663.

It is an interprime number because it is at equal distance from previous prime (36640129) and next prime (36640133).

It is not a de Polignac number, because 36640131 - 2¹ = 36640129 is a prime.

It is a super-2 number, since 2×36640131² = 2684998399394322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (36640133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50106 + ... + 50831.

It is an arithmetic number, because the mean of its divisors is an integer number (4474918).

Almost surely, 2^36640131 is an apocalyptic number.

36640131 is a deficient number, since it is larger than the sum of its proper divisors (17058885).

36640131 is a wasteful number, since it uses less digits than its factorization.

36640131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100962 (or 100951 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 36640131 is about 6053.1092010635. The cubic root of 36640131 is about 332.1383362878.

Adding to 36640131 its reverse (13104663), we get a palindrome (49744794).

The spelling of 36640131 in words is "thirty-six million, six hundred forty thousand, one hundred thirty-one".