213504250 has 16 divisors (see below), whose sum is σ = 399680424. Its totient is φ = 85401600.

The previous prime is 213504233. The next prime is 213504251. The reversal of 213504250 is 52405312.

It can be written as a sum of positive squares in 4 ways, for example, as 127441521 + 86062729 = 11289^2 + 9277^2 .

It is not an unprimeable number, because it can be changed into a prime (213504251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426759 + ... + 427258.

Almost surely, 2^213504250 is an apocalyptic number.

213504250 is a deficient number, since it is larger than the sum of its proper divisors (186176174).

213504250 is an equidigital number, since it uses as much as digits as its factorization.

213504250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854034 (or 854024 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 213504250 is about 14611.7846274848. The cubic root of 213504250 is about 597.6801625202.

Adding to 213504250 its reverse (52405312), we get a palindrome (265909562).

It can be divided in two parts, 21350 and 4250, that added together give a square (25600 = 160²).

The spelling of 213504250 in words is "two hundred thirteen million, five hundred four thousand, two hundred fifty".