213099401 has 4 divisors (see below), whose sum is σ = 213533904. Its totient is φ = 212664900.

The previous prime is 213099389. The next prime is 213099407. The reversal of 213099401 is 104990312.

It is a happy number.

213099401 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213099401 - 2¹⁰ = 213098377 is a prime.

It is a super-2 number, since 2×213099401² = 90822709413117602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213099407) 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, 216515 + ... + 217496.

It is an arithmetic number, because the mean of its divisors is an integer number (53383476).

Almost surely, 2^213099401 is an apocalyptic number.

It is an amenable number.

213099401 is a deficient number, since it is larger than the sum of its proper divisors (434503).

213099401 is an equidigital number, since it uses as much as digits as its factorization.

213099401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434502.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 213099401 is about 14597.9245442631. The cubic root of 213099401 is about 597.3021476882.

The spelling of 213099401 in words is "two hundred thirteen million, ninety-nine thousand, four hundred one".