31320241279 has 2 divisors, whose sum is σ = 31320241280. Its totient is φ = 31320241278.

The previous prime is 31320241219. The next prime is 31320241313. The reversal of 31320241279 is 97214202313.

It is an a-pointer prime, because the next prime (31320241313) can be obtained adding 31320241279 to its sum of digits (34).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31320241279 - 2²¹ = 31318144127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31320241219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660120639 + 15660120640.

It is an arithmetic number, because the mean of its divisors is an integer number (15660120640).

Almost surely, 2^31320241279 is an apocalyptic number.

31320241279 is a deficient number, since it is larger than the sum of its proper divisors (1).

31320241279 is an equidigital number, since it uses as much as digits as its factorization.

31320241279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 31320241279 in words is "thirty-one billion, three hundred twenty million, two hundred forty-one thousand, two hundred seventy-nine".