2321311397 has 2 divisors, whose sum is σ = 2321311398. Its totient is φ = 2321311396.

The previous prime is 2321311367. The next prime is 2321311429. The reversal of 2321311397 is 7931131232.

It is an a-pointer prime, because the next prime (2321311429) can be obtained adding 2321311397 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1954435681 + 366875716 = 44209^2 + 19154^2 .

It is a cyclic number.

It is not a de Polignac number, because 2321311397 - 2¹² = 2321307301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2321311337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160655698 + 1160655699.

It is an arithmetic number, because the mean of its divisors is an integer number (1160655699).

Almost surely, 2^2321311397 is an apocalyptic number.

It is an amenable number.

2321311397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321311397 is an equidigital number, since it uses as much as digits as its factorization.

2321311397 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2321311397 is about 48179.9895911155. The cubic root of 2321311397 is about 1324.0705758313.

The spelling of 2321311397 in words is "two billion, three hundred twenty-one million, three hundred eleven thousand, three hundred ninety-seven".