36103813 has 4 divisors (see below), whose sum is σ = 37673568. Its totient is φ = 34534060.

The previous prime is 36103787. The next prime is 36103817. The reversal of 36103813 is 31830163.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 36103813 - 2²⁵ = 2549381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36103817) 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, 784843 + ... + 784888.

It is an arithmetic number, because the mean of its divisors is an integer number (9418392).

Almost surely, 2^36103813 is an apocalyptic number.

It is an amenable number.

36103813 is a deficient number, since it is larger than the sum of its proper divisors (1569755).

36103813 is a wasteful number, since it uses less digits than its factorization.

36103813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569754.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 36103813 is about 6008.6448555394. The cubic root of 36103813 is about 330.5098119326.

Adding to 36103813 its reverse (31830163), we get a palindrome (67933976).

The spelling of 36103813 in words is "thirty-six million, one hundred three thousand, eight hundred thirteen".