213134733 has 20 divisors (see below), whose sum is σ = 363871200. Its totient is φ = 121790952.

The previous prime is 213134731. The next prime is 213134737. The reversal of 213134733 is 337431312.

213134733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213134733 - 2¹ = 213134731 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 213134697 and 213134706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213134731) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 187383 + ... + 188516.

It is an arithmetic number, because the mean of its divisors is an integer number (18193560).

Almost surely, 2^213134733 is an apocalyptic number.

It is an amenable number.

213134733 is a deficient number, since it is larger than the sum of its proper divisors (150736467).

213134733 is an equidigital number, since it uses as much as digits as its factorization.

213134733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375918 (or 375909 counting only the distinct ones).

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

The square root of 213134733 is about 14599.1346661369. The cubic root of 213134733 is about 597.3351568742.

It can be divided in two parts, 2131 and 34733, that added together give a square (36864 = 192²).

The spelling of 213134733 in words is "two hundred thirteen million, one hundred thirty-four thousand, seven hundred thirty-three".