213132212957 has 2 divisors, whose sum is σ = 213132212958. Its totient is φ = 213132212956.

The previous prime is 213132212939. The next prime is 213132212981. The reversal of 213132212957 is 759212231312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107338795876 + 105793417081 = 327626^2 + 325259^2 .

It is a cyclic number.

It is not a de Polignac number, because 213132212957 - 2⁶ = 213132212893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213132212957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213132217957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106566106478 + 106566106479.

It is an arithmetic number, because the mean of its divisors is an integer number (106566106479).

Almost surely, 2^213132212957 is an apocalyptic number.

It is an amenable number.

213132212957 is a deficient number, since it is larger than the sum of its proper divisors (1).

213132212957 is an equidigital number, since it uses as much as digits as its factorization.

213132212957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The spelling of 213132212957 in words is "two hundred thirteen billion, one hundred thirty-two million, two hundred twelve thousand, nine hundred fifty-seven".