213134740 has 96 divisors (see below), whose sum is σ = 554770944. Its totient is φ = 66977280.

The previous prime is 213134737. The next prime is 213134743. The reversal of 213134740 is 47431312.

213134740 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (213134737) and next prime (213134743).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213134743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 329097 + ... + 329743.

It is an arithmetic number, because the mean of its divisors is an integer number (5778864).

Almost surely, 2^213134740 is an apocalyptic number.

213134740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213134740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277385472).

213134740 is an abundant number, since it is smaller than the sum of its proper divisors (341636204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213134740 is a wasteful number, since it uses less digits than its factorization.

213134740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 213134740 is about 14599.1349058771. The cubic root of 213134740 is about 597.3351634136.

The spelling of 213134740 in words is "two hundred thirteen million, one hundred thirty-four thousand, seven hundred forty".