213153697 has 2 divisors, whose sum is σ = 213153698. Its totient is φ = 213153696.

The previous prime is 213153641. The next prime is 213153749. The reversal of 213153697 is 796351312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134583201 + 78570496 = 11601^2 + 8864^2 .

It is a cyclic number.

It is not a de Polignac number, because 213153697 - 2¹⁹ = 212629409 is a prime.

It is not a weakly prime, because it can be changed into another prime (213193697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106576848 + 106576849.

It is an arithmetic number, because the mean of its divisors is an integer number (106576849).

Almost surely, 2^213153697 is an apocalyptic number.

It is an amenable number.

213153697 is a deficient number, since it is larger than the sum of its proper divisors (1).

213153697 is an equidigital number, since it uses as much as digits as its factorization.

213153697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 37.

The square root of 213153697 is about 14599.7841422399. The cubic root of 213153697 is about 597.3528726289.

The spelling of 213153697 in words is "two hundred thirteen million, one hundred fifty-three thousand, six hundred ninety-seven".