213618934 has 8 divisors (see below), whose sum is σ = 321143400. Its totient is φ = 106571136.

The previous prime is 213618893. The next prime is 213618941. The reversal of 213618934 is 439816312.

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

It is a junction number, because it is equal to n+sod(n) for n = 213618893 and 213618902.

It is a congruent number.

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, 118044 + ... + 119839.

It is an arithmetic number, because the mean of its divisors is an integer number (40142925).

Almost surely, 2^213618934 is an apocalyptic number.

213618934 is a deficient number, since it is larger than the sum of its proper divisors (107524466).

213618934 is a wasteful number, since it uses less digits than its factorization.

213618934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238334.

The product of its digits is 31104, while the sum is 37.

The square root of 213618934 is about 14615.7084672622. The cubic root of 213618934 is about 597.7871581773.

The spelling of 213618934 in words is "two hundred thirteen million, six hundred eighteen thousand, nine hundred thirty-four".