213997020 has 48 divisors (see below), whose sum is σ = 634441248. Its totient is φ = 53708800.

The previous prime is 213997009. The next prime is 213997031. The reversal of 213997020 is 20799312.

213997020 is digitally balanced in base 2 and base 3, because in such bases 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 (213997009) and next prime (213997031).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103881 + ... + 105920.

It is an arithmetic number, because the mean of its divisors is an integer number (13217526).

Almost surely, 2^213997020 is an apocalyptic number.

213997020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213997020 is an abundant number, since it is smaller than the sum of its proper divisors (420444228).

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

213997020 is a wasteful number, since it uses less digits than its factorization.

213997020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209830 (or 209828 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 213997020 is about 14628.6369836701. The cubic root of 213997020 is about 598.1396265350.

The spelling of 213997020 in words is "two hundred thirteen million, nine hundred ninety-seven thousand, twenty".