2231276549 has 2 divisors, whose sum is σ = 2231276550. Its totient is φ = 2231276548.

The previous prime is 2231276507. The next prime is 2231276557. The reversal of 2231276549 is 9456721322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1830556225 + 400720324 = 42785^2 + 20018^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2231276549 is a prime.

It is a super-3 number, since 3×2231276549³ (a number of 29 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231273549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115638274 + 1115638275.

It is an arithmetic number, because the mean of its divisors is an integer number (1115638275).

Almost surely, 2^2231276549 is an apocalyptic number.

It is an amenable number.

2231276549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231276549 is an equidigital number, since it uses as much as digits as its factorization.

2231276549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

The square root of 2231276549 is about 47236.3900928087. The cubic root of 2231276549 is about 1306.7258032884.

The spelling of 2231276549 in words is "two billion, two hundred thirty-one million, two hundred seventy-six thousand, five hundred forty-nine".