213004256 has 24 divisors (see below), whose sum is σ = 425615400. Its totient is φ = 104911488.

The previous prime is 213004243. The next prime is 213004277. The reversal of 213004256 is 652400312.

213004256 = T₂₄₈₈ + T₂₄₈₉ + ... + T₂₅₅₄.

213004256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213004256² = 90741626148227072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47531 + ... + 51818.

It is an arithmetic number, because the mean of its divisors is an integer number (17733975).

Almost surely, 2^213004256 is an apocalyptic number.

It is an amenable number.

213004256 is a deficient number, since it is larger than the sum of its proper divisors (212611144).

213004256 is an equidigital number, since it uses as much as digits as its factorization.

213004256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99426 (or 99418 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 213004256 is about 14594.6653267555. The cubic root of 213004256 is about 597.2132396128.

Adding to 213004256 its reverse (652400312), we get a palindrome (865404568).

The spelling of 213004256 in words is "two hundred thirteen million, four thousand, two hundred fifty-six".