2231669 has 4 divisors (see below), whose sum is σ = 2434560. Its totient is φ = 2028780.

The previous prime is 2231653. The next prime is 2231681. The reversal of 2231669 is 9661322.

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 2231669 - 2⁴ = 2231653 is a prime.

It is a super-3 number, since 3×2231669³ = 33343454851056573927, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231609) 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, 101429 + ... + 101450.

It is an arithmetic number, because the mean of its divisors is an integer number (608640).

2^2231669 is an apocalyptic number.

It is an amenable number.

2231669 is a deficient number, since it is larger than the sum of its proper divisors (202891).

2231669 is a wasteful number, since it uses less digits than its factorization.

2231669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202890.

The product of its digits is 3888, while the sum is 29.

The square root of 2231669 is about 1493.8771703189. The cubic root of 2231669 is about 130.6802410524.

The spelling of 2231669 in words is "two million, two hundred thirty-one thousand, six hundred sixty-nine".