36213811 has 2 divisors, whose sum is σ = 36213812. Its totient is φ = 36213810.

The previous prime is 36213803. The next prime is 36213851. The reversal of 36213811 is 11831263.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36213811 - 2³ = 36213803 is a prime.

It is a super-2 number, since 2×36213811² = 2622880214287442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (36213851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18106905 + 18106906.

It is an arithmetic number, because the mean of its divisors is an integer number (18106906).

Almost surely, 2^36213811 is an apocalyptic number.

36213811 is a deficient number, since it is larger than the sum of its proper divisors (1).

36213811 is an equidigital number, since it uses as much as digits as its factorization.

36213811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 36213811 is about 6017.7912060822. The cubic root of 36213811 is about 330.8451279386.

It can be divided in two parts, 3621 and 3811, that multiplied together give a triangular number (13799631 = T₅₂₅₃).

The spelling of 36213811 in words is "thirty-six million, two hundred thirteen thousand, eight hundred eleven".