2421313397 has 2 divisors, whose sum is σ = 2421313398. Its totient is φ = 2421313396.

The previous prime is 2421313387. The next prime is 2421313403. The reversal of 2421313397 is 7933131242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1600720081 + 820593316 = 40009^2 + 28646^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421313397 - 2⁴ = 2421313381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2421313357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210656698 + 1210656699.

It is an arithmetic number, because the mean of its divisors is an integer number (1210656699).

Almost surely, 2^2421313397 is an apocalyptic number.

It is an amenable number.

2421313397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421313397 is an equidigital number, since it uses as much as digits as its factorization.

2421313397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The square root of 2421313397 is about 49206.8429895680. The cubic root of 2421313397 is about 1342.8175284025.

The spelling of 2421313397 in words is "two billion, four hundred twenty-one million, three hundred thirteen thousand, three hundred ninety-seven".