213919733 has 4 divisors (see below), whose sum is σ = 215232288. Its totient is φ = 212607180.

The previous prime is 213919723. The next prime is 213919751. The reversal of 213919733 is 337919312.

213919733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213919733 - 2⁶ = 213919669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213919723) 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, 656033 + ... + 656358.

It is an arithmetic number, because the mean of its divisors is an integer number (53808072).

Almost surely, 2^213919733 is an apocalyptic number.

It is an amenable number.

213919733 is a deficient number, since it is larger than the sum of its proper divisors (1312555).

213919733 is a wasteful number, since it uses less digits than its factorization.

213919733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312554.

The product of its digits is 30618, while the sum is 38.

The square root of 213919733 is about 14625.9951114446. The cubic root of 213919733 is about 598.0676099812.

The spelling of 213919733 in words is "two hundred thirteen million, nine hundred nineteen thousand, seven hundred thirty-three".