213693290 has 8 divisors (see below), whose sum is σ = 384647940. Its totient is φ = 85477312.

The previous prime is 213693289. The next prime is 213693313. The reversal of 213693290 is 92396312.

It can be written as a sum of positive squares in 2 ways, for example, as 206813161 + 6880129 = 14381^2 + 2623^2 .

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 213693290.

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, 10684655 + ... + 10684674.

Almost surely, 2^213693290 is an apocalyptic number.

213693290 is a deficient number, since it is larger than the sum of its proper divisors (170954650).

213693290 is a wasteful number, since it uses less digits than its factorization.

213693290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21369336.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 213693290 is about 14618.2519474799. The cubic root of 213693290 is about 597.8565089364.

The spelling of 213693290 in words is "two hundred thirteen million, six hundred ninety-three thousand, two hundred ninety".