213025971 has 4 divisors (see below), whose sum is σ = 284034632. Its totient is φ = 142017312.

The previous prime is 213025961. The next prime is 213025993. The reversal of 213025971 is 179520312.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 213025971 - 2⁶ = 213025907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213025961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35504326 + ... + 35504331.

It is an arithmetic number, because the mean of its divisors is an integer number (71008658).

Almost surely, 2^213025971 is an apocalyptic number.

213025971 is a deficient number, since it is larger than the sum of its proper divisors (71008661).

213025971 is an equidigital number, since it uses as much as digits as its factorization.

213025971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71008660.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 213025971 is about 14595.4092440055. The cubic root of 213025971 is about 597.2335334872.

The spelling of 213025971 in words is "two hundred thirteen million, twenty-five thousand, nine hundred seventy-one".