82961213 has 2 divisors, whose sum is σ = 82961214. Its totient is φ = 82961212.

The previous prime is 82961189. The next prime is 82961237. The reversal of 82961213 is 31216928.

It is a balanced prime because it is at equal distance from previous prime (82961189) and next prime (82961237).

It can be written as a sum of positive squares in only one way, i.e., 67453369 + 15507844 = 8213^2 + 3938^2 .

It is a cyclic number.

It is not a de Polignac number, because 82961213 - 2⁸ = 82960957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82961213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82961113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41480606 + 41480607.

It is an arithmetic number, because the mean of its divisors is an integer number (41480607).

Almost surely, 2^82961213 is an apocalyptic number.

It is an amenable number.

82961213 is a deficient number, since it is larger than the sum of its proper divisors (1).

82961213 is an equidigital number, since it uses as much as digits as its factorization.

82961213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The square root of 82961213 is about 9108.3046172161. The cubic root of 82961213 is about 436.1391081105.

The spelling of 82961213 in words is "eighty-two million, nine hundred sixty-one thousand, two hundred thirteen".