36405131 has 8 divisors (see below), whose sum is σ = 41643744. Its totient is φ = 31176000.

The previous prime is 36405107. The next prime is 36405157. The reversal of 36405131 is 13150463.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36405131 - 2¹⁰ = 36404107 is a prime.

It is a super-2 number, since 2×36405131² = 2650667126254322, 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 = 36405097 and 36405106.

It is not an unprimeable number, because it can be changed into a prime (36405181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10631 + ... + 13631.

It is an arithmetic number, because the mean of its divisors is an integer number (5205468).

Almost surely, 2^36405131 is an apocalyptic number.

36405131 is a deficient number, since it is larger than the sum of its proper divisors (5238613).

36405131 is a wasteful number, since it uses less digits than its factorization.

36405131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4741.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 36405131 is about 6033.6664640996. Note that the first 3 decimals coincide. The cubic root of 36405131 is about 331.4267306127.

Adding to 36405131 its reverse (13150463), we get a palindrome (49555594).

The spelling of 36405131 in words is "thirty-six million, four hundred five thousand, one hundred thirty-one".