1601132213 has 4 divisors (see below), whose sum is σ = 1606790208. Its totient is φ = 1595474220.

The previous prime is 1601132207. The next prime is 1601132249. The reversal of 1601132213 is 3122311061.

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 1601132213 - 2²⁴ = 1584354997 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 (1601132293) 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, 2828573 + ... + 2829138.

It is an arithmetic number, because the mean of its divisors is an integer number (401697552).

Almost surely, 2^1601132213 is an apocalyptic number.

It is an amenable number.

1601132213 is a deficient number, since it is larger than the sum of its proper divisors (5657995).

1601132213 is an equidigital number, since it uses as much as digits as its factorization.

1601132213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5657994.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1601132213 is about 40014.1501596623. The cubic root of 1601132213 is about 1169.8829144771.

Adding to 1601132213 its reverse (3122311061), we get a palindrome (4723443274).

The spelling of 1601132213 in words is "one billion, six hundred one million, one hundred thirty-two thousand, two hundred thirteen".