213551413 has 4 divisors (see below), whose sum is σ = 213606988. Its totient is φ = 213495840.

The previous prime is 213551407. The next prime is 213551441. The reversal of 213551413 is 314155312.

It is a happy number.

213551413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 49660209 + 163891204 = 7047^2 + 12802^2 .

It is a cyclic number.

It is not a de Polignac number, because 213551413 - 2⁵ = 213551381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213551453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21558 + ... + 29863.

It is an arithmetic number, because the mean of its divisors is an integer number (53401747).

Almost surely, 2^213551413 is an apocalyptic number.

It is an amenable number.

213551413 is a deficient number, since it is larger than the sum of its proper divisors (55575).

213551413 is an equidigital number, since it uses as much as digits as its factorization.

213551413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55574.

The product of its digits is 1800, while the sum is 25.

The square root of 213551413 is about 14613.3984069415. The cubic root of 213551413 is about 597.7241683799.

The spelling of 213551413 in words is "two hundred thirteen million, five hundred fifty-one thousand, four hundred thirteen".