213970320 has 120 divisors (see below), whose sum is σ = 733988736. Its totient is φ = 55835904.

The previous prime is 213970319. The next prime is 213970321. The reversal of 213970320 is 23079312.

It is an interprime number because it is at equal distance from previous prime (213970319) and next prime (213970321).

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (213970321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30679 + ... + 37001.

Almost surely, 2^213970320 is an apocalyptic number.

213970320 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 213970320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366994368).

213970320 is an abundant number, since it is smaller than the sum of its proper divisors (520018416).

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

213970320 is a wasteful number, since it uses less digits than its factorization.

213970320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6389 (or 6380 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 213970320 is about 14627.7243616360. The cubic root of 213970320 is about 598.1147492535.

The spelling of 213970320 in words is "two hundred thirteen million, nine hundred seventy thousand, three hundred twenty".