31341819793 has 4 divisors (see below), whose sum is σ = 31342685760. Its totient is φ = 31340953828.

The previous prime is 31341819757. The next prime is 31341819809. The reversal of 31341819793 is 39791814313.

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: 39791814313 = 1697 ⋅23448329.

It is a cyclic number.

It is not a de Polignac number, because 31341819793 - 2³³ = 22751885201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31341819713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376213 + ... + 451906.

It is an arithmetic number, because the mean of its divisors is an integer number (7835671440).

Almost surely, 2^31341819793 is an apocalyptic number.

It is an amenable number.

31341819793 is a deficient number, since it is larger than the sum of its proper divisors (865967).

31341819793 is an equidigital number, since it uses as much as digits as its factorization.

31341819793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865966.

The product of its digits is 489888, while the sum is 49.

The spelling of 31341819793 in words is "thirty-one billion, three hundred forty-one million, eight hundred nineteen thousand, seven hundred ninety-three".