31320053399 has 2 divisors, whose sum is σ = 31320053400. Its totient is φ = 31320053398.

The previous prime is 31320053357. The next prime is 31320053407. The reversal of 31320053399 is 99335002313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31320053399 - 2³² = 27025086103 is a prime.

It is a super-2 number, since 2×31320053399² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31380053399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660026699 + 15660026700.

It is an arithmetic number, because the mean of its divisors is an integer number (15660026700).

Almost surely, 2^31320053399 is an apocalyptic number.

31320053399 is a deficient number, since it is larger than the sum of its proper divisors (1).

31320053399 is an equidigital number, since it uses as much as digits as its factorization.

31320053399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65610, while the sum is 38.

The spelling of 31320053399 in words is "thirty-one billion, three hundred twenty million, fifty-three thousand, three hundred ninety-nine".