213623256 has 64 divisors (see below), whose sum is σ = 665844480. Its totient is φ = 55486080.

The previous prime is 213623239. The next prime is 213623257. The reversal of 213623256 is 652326312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213623257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55951 + ... + 59646.

It is an arithmetic number, because the mean of its divisors is an integer number (10403820).

Almost surely, 2^213623256 is an apocalyptic number.

It is an amenable number.

213623256 is an abundant number, since it is smaller than the sum of its proper divisors (452221224).

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

213623256 is a wasteful number, since it uses less digits than its factorization.

213623256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115624 (or 115620 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 213623256 is about 14615.8563211329. The cubic root of 213623256 is about 597.7911896843.

Adding to 213623256 its reverse (652326312), we get a palindrome (865949568).

The spelling of 213623256 in words is "two hundred thirteen million, six hundred twenty-three thousand, two hundred fifty-six".