2231901 has 32 divisors (see below), whose sum is σ = 3872000. Its totient is φ = 1270080.

The previous prime is 2231891. The next prime is 2231909. The reversal of 2231901 is 1091322.

It is a happy number.

It is not a de Polignac number, because 2231901 - 2⁷ = 2231773 is a prime.

It is a super-3 number, since 3×2231901³ = 33353854895695577103, which contains 333 as substring.

It is a Duffinian number.

2231901 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9141 + ... + 9381.

It is an arithmetic number, because the mean of its divisors is an integer number (121000).

2^2231901 is an apocalyptic number.

2231901 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2231901 is a deficient number, since it is larger than the sum of its proper divisors (1640099).

2231901 is an equidigital number, since it uses as much as digits as its factorization.

2231901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 2231901 is about 1493.9548185939. The cubic root of 2231901 is about 130.6847693173.

The spelling of 2231901 in words is "two million, two hundred thirty-one thousand, nine hundred one".