213100490 has 8 divisors (see below), whose sum is σ = 383580900. Its totient is φ = 85240192.

The previous prime is 213100487. The next prime is 213100499. The reversal of 213100490 is 94001312.

It can be written as a sum of positive squares in 2 ways, for example, as 209294089 + 3806401 = 14467^2 + 1951^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213100499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10655015 + ... + 10655034.

Almost surely, 2^213100490 is an apocalyptic number.

213100490 is a deficient number, since it is larger than the sum of its proper divisors (170480410).

213100490 is a wasteful number, since it uses less digits than its factorization.

213100490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21310056.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 213100490 is about 14597.9618440384. The cubic root of 213100490 is about 597.3031651491.

The spelling of 213100490 in words is "two hundred thirteen million, one hundred thousand, four hundred ninety".