213816633 has 32 divisors (see below), whose sum is σ = 319334400. Its totient is φ = 126464256.

The previous prime is 213816619. The next prime is 213816661. The reversal of 213816633 is 336618312.

It is not a de Polignac number, because 213816633 - 2⁶ = 213816569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213816594 and 213816603.

It is not an unprimeable number, because it can be changed into a prime (213812633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254428 + ... + 255266.

It is an arithmetic number, because the mean of its divisors is an integer number (9979200).

Almost surely, 2^213816633 is an apocalyptic number.

It is an amenable number.

213816633 is a deficient number, since it is larger than the sum of its proper divisors (105517767).

213816633 is a wasteful number, since it uses less digits than its factorization.

213816633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141.

The product of its digits is 15552, while the sum is 33.

The square root of 213816633 is about 14622.4701401644. The cubic root of 213816633 is about 597.9715136895.

The spelling of 213816633 in words is "two hundred thirteen million, eight hundred sixteen thousand, six hundred thirty-three".