31334441393 has 4 divisors (see below), whose sum is σ = 31865533680. Its totient is φ = 30803349108.

The previous prime is 31334441381. The next prime is 31334441399. The reversal of 31334441393 is 39314443313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39314443313 = 19 ⋅2069181227.

It is a cyclic number.

It is not a de Polignac number, because 31334441393 - 2⁶ = 31334441329 is a prime.

It is a super-2 number, since 2×31334441393² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31334441399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265546055 + ... + 265546172.

It is an arithmetic number, because the mean of its divisors is an integer number (7966383420).

Almost surely, 2^31334441393 is an apocalyptic number.

It is an amenable number.

31334441393 is a deficient number, since it is larger than the sum of its proper divisors (531092287).

31334441393 is an equidigital number, since it uses as much as digits as its factorization.

31334441393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531092286.

The product of its digits is 139968, while the sum is 38.

The spelling of 31334441393 in words is "thirty-one billion, three hundred thirty-four million, four hundred forty-one thousand, three hundred ninety-three".