213245402 has 8 divisors (see below), whose sum is σ = 321830976. Its totient is φ = 105968412.

The previous prime is 213245309. The next prime is 213245413. The reversal of 213245402 is 204542312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326738 + ... + 327389.

It is an arithmetic number, because the mean of its divisors is an integer number (40228872).

Almost surely, 2^213245402 is an apocalyptic number.

213245402 is a deficient number, since it is larger than the sum of its proper divisors (108585574).

213245402 is a wasteful number, since it uses less digits than its factorization.

213245402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654292.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 213245402 is about 14602.9244331401. The cubic root of 213245402 is about 597.4385266144.

Adding to 213245402 its reverse (204542312), we get a palindrome (417787714).

It can be divided in two parts, 21 and 3245402, that added together give a palindrome (3245423).

The spelling of 213245402 in words is "two hundred thirteen million, two hundred forty-five thousand, four hundred two".