2231331917 has 2 divisors, whose sum is σ = 2231331918. Its totient is φ = 2231331916.

The previous prime is 2231331901. The next prime is 2231331929. The reversal of 2231331917 is 7191331322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1865030596 + 366301321 = 43186^2 + 19139^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231331917 - 2⁴ = 2231331901 is a prime.

It is a super-3 number, since 3×2231331917³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231331967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115665958 + 1115665959.

It is an arithmetic number, because the mean of its divisors is an integer number (1115665959).

It is a self-describing number.

Almost surely, 2^2231331917 is an apocalyptic number.

It is an amenable number.

2231331917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231331917 is an equidigital number, since it uses as much as digits as its factorization.

2231331917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 32.

The square root of 2231331917 is about 47236.9761627478. The cubic root of 2231331917 is about 1306.7366117791.

The spelling of 2231331917 in words is "two billion, two hundred thirty-one million, three hundred thirty-one thousand, nine hundred seventeen".