36123631 has 4 divisors (see below), whose sum is σ = 36136512. Its totient is φ = 36110752.

The previous prime is 36123629. The next prime is 36123641. The reversal of 36123631 is 13632163.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 36123631 - 2¹ = 36123629 is a prime.

It is a super-2 number, since 2×36123631² = 2609833433248322, 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 = 36123596 and 36123605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36123601) 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, 250 + ... + 8503.

It is an arithmetic number, because the mean of its divisors is an integer number (9034128).

Almost surely, 2^36123631 is an apocalyptic number.

36123631 is a deficient number, since it is larger than the sum of its proper divisors (12881).

36123631 is an equidigital number, since it uses as much as digits as its factorization.

36123631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12880.

The product of its digits is 1944, while the sum is 25.

The square root of 36123631 is about 6010.2937532204. The cubic root of 36123631 is about 330.5702750323.

Adding to 36123631 its reverse (13632163), we get a palindrome (49755794).

The spelling of 36123631 in words is "thirty-six million, one hundred twenty-three thousand, six hundred thirty-one".