213113738 has 8 divisors (see below), whose sum is σ = 319936932. Its totient is φ = 106468096.

The previous prime is 213113731. The next prime is 213113743. The reversal of 213113738 is 837311312.

It can be written as a sum of positive squares in 2 ways, for example, as 181899169 + 31214569 = 13487^2 + 5587^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 213113738.

It is not an unprimeable number, because it can be changed into a prime (213113731) 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, 41345 + ... + 46212.

Almost surely, 2^213113738 is an apocalyptic number.

213113738 is a deficient number, since it is larger than the sum of its proper divisors (106823194).

213113738 is a wasteful number, since it uses less digits than its factorization.

213113738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88776.

The product of its digits is 3024, while the sum is 29.

The square root of 213113738 is about 14598.4155989614. The cubic root of 213113738 is about 597.3155425778.

The spelling of 213113738 in words is "two hundred thirteen million, one hundred thirteen thousand, seven hundred thirty-eight".