213157982 has 4 divisors (see below), whose sum is σ = 319736976. Its totient is φ = 106578990.

The previous prime is 213157969. The next prime is 213158003. The reversal of 213157982 is 289751312.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 53289494 + ... + 53289497.

It is an arithmetic number, because the mean of its divisors is an integer number (79934244).

Almost surely, 2^213157982 is an apocalyptic number.

213157982 is a deficient number, since it is larger than the sum of its proper divisors (106578994).

213157982 is a wasteful number, since it uses less digits than its factorization.

213157982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106578993.

The product of its digits is 30240, while the sum is 38.

The square root of 213157982 is about 14599.9308902474. The cubic root of 213157982 is about 597.3568754368.

The spelling of 213157982 in words is "two hundred thirteen million, one hundred fifty-seven thousand, nine hundred eighty-two".