213151273 has 2 divisors, whose sum is σ = 213151274. Its totient is φ = 213151272.

The previous prime is 213151271. The next prime is 213151277. The reversal of 213151273 is 372151312.

It is a happy number.

213151273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200420649 + 12730624 = 14157^2 + 3568^2 .

It is a cyclic number.

It is not a de Polignac number, because 213151273 - 2¹ = 213151271 is a prime.

Together with 213151271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (213151271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106575636 + 106575637.

It is an arithmetic number, because the mean of its divisors is an integer number (106575637).

Almost surely, 2^213151273 is an apocalyptic number.

It is an amenable number.

213151273 is a deficient number, since it is larger than the sum of its proper divisors (1).

213151273 is an equidigital number, since it uses as much as digits as its factorization.

213151273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 25.

The square root of 213151273 is about 14599.7011270779. The cubic root of 213151273 is about 597.3506082396.

The spelling of 213151273 in words is "two hundred thirteen million, one hundred fifty-one thousand, two hundred seventy-three".