213317433 has 36 divisors (see below), whose sum is σ = 374033088. Its totient is φ = 116590320.

The previous prime is 213317431. The next prime is 213317449. The reversal of 213317433 is 334713312.

213317433 is a `hidden beast` number, since 213 + 3 + 17 + 433 = 666.

It is not a de Polignac number, because 213317433 - 2¹ = 213317431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213317397 and 213317406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213317431) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 373 + ... + 20658.

It is an arithmetic number, because the mean of its divisors is an integer number (10389808).

Almost surely, 2^213317433 is an apocalyptic number.

213317433 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

213317433 is a deficient number, since it is larger than the sum of its proper divisors (160715655).

213317433 is a wasteful number, since it uses less digits than its factorization.

213317433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21074 (or 21064 counting only the distinct ones).

The product of its digits is 4536, while the sum is 27.

The square root of 213317433 is about 14605.3905459594. The cubic root of 213317433 is about 597.5057875410.

The spelling of 213317433 in words is "two hundred thirteen million, three hundred seventeen thousand, four hundred thirty-three".