213481019 has 4 divisors (see below), whose sum is σ = 226038744. Its totient is φ = 200923296.

The previous prime is 213481013. The next prime is 213481067. The reversal of 213481019 is 910184312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213481019 - 2²⁰ = 212432443 is a prime.

It is a super-2 number, since 2×213481019² = 91148290946556722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213480982 and 213481000.

It is not an unprimeable number, because it can be changed into a prime (213481013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6278837 + ... + 6278870.

It is an arithmetic number, because the mean of its divisors is an integer number (56509686).

Almost surely, 2^213481019 is an apocalyptic number.

213481019 is a deficient number, since it is larger than the sum of its proper divisors (12557725).

213481019 is a wasteful number, since it uses less digits than its factorization.

213481019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12557724.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 213481019 is about 14610.9896653170. The cubic root of 213481019 is about 597.6584842453.

The spelling of 213481019 in words is "two hundred thirteen million, four hundred eighty-one thousand, nineteen".