36213961 has 16 divisors (see below), whose sum is σ = 43998336. Its totient is φ = 29097216.

The previous prime is 36213959. The next prime is 36213973. The reversal of 36213961 is 16931263.

It is a cyclic number.

It is not a de Polignac number, because 36213961 - 2¹ = 36213959 is a prime.

It is a super-2 number, since 2×36213961² = 2622901942619042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36213061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40855 + ... + 41731.

It is an arithmetic number, because the mean of its divisors is an integer number (2749896).

Almost surely, 2^36213961 is an apocalyptic number.

It is an amenable number.

36213961 is a deficient number, since it is larger than the sum of its proper divisors (7784375).

36213961 is a wasteful number, since it uses less digits than its factorization.

36213961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248.

The product of its digits is 5832, while the sum is 31.

The square root of 36213961 is about 6017.8036691138. The cubic root of 36213961 is about 330.8455847321.

The spelling of 36213961 in words is "thirty-six million, two hundred thirteen thousand, nine hundred sixty-one".