2231420209 has 2 divisors, whose sum is σ = 2231420210. Its totient is φ = 2231420208.

The previous prime is 2231420201. The next prime is 2231420231. The reversal of 2231420209 is 9020241322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1879482609 + 351937600 = 43353^2 + 18760^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231420209 - 2³ = 2231420201 is a prime.

It is a super-3 number, since 3×2231420209³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2231420201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115710104 + 1115710105.

It is an arithmetic number, because the mean of its divisors is an integer number (1115710105).

Almost surely, 2^2231420209 is an apocalyptic number.

It is an amenable number.

2231420209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231420209 is an equidigital number, since it uses as much as digits as its factorization.

2231420209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2231420209 is about 47237.9107179816. The cubic root of 2231420209 is about 1306.7538470556.

The spelling of 2231420209 in words is "two billion, two hundred thirty-one million, four hundred twenty thousand, two hundred nine".