213243002 has 24 divisors (see below), whose sum is σ = 393977844. Its totient is φ = 86013312.

The previous prime is 213242999. The next prime is 213243049. The reversal of 213243002 is 200342312.

It can be written as a sum of positive squares in 2 ways, for example, as 196588441 + 16654561 = 14021^2 + 4081^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62333 + ... + 65664.

Almost surely, 2^213243002 is an apocalyptic number.

213243002 is a deficient number, since it is larger than the sum of its proper divisors (180734842).

213243002 is a wasteful number, since it uses less digits than its factorization.

213243002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128030 (or 128023 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 213243002 is about 14602.8422575881. The cubic root of 213243002 is about 597.4362852877.

Adding to 213243002 its reverse (200342312), we get a palindrome (413585314).

The spelling of 213243002 in words is "two hundred thirteen million, two hundred forty-three thousand, two".