31343914919 has 4 divisors (see below), whose sum is σ = 31352239344. Its totient is φ = 31335590496.

The previous prime is 31343914897. The next prime is 31343915011. The reversal of 31343914919 is 91941934313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91941934313 = 1193 ⋅77067841.

It is a cyclic number.

It is not a de Polignac number, because 31343914919 - 2²⁰ = 31342866343 is a prime.

It is a super-2 number, since 2×31343914919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31343904919) 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, 4156562 + ... + 4164095.

It is an arithmetic number, because the mean of its divisors is an integer number (7838059836).

Almost surely, 2^31343914919 is an apocalyptic number.

31343914919 is a deficient number, since it is larger than the sum of its proper divisors (8324425).

31343914919 is an equidigital number, since it uses as much as digits as its factorization.

31343914919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8324424.

The product of its digits is 314928, while the sum is 47.

The spelling of 31343914919 in words is "thirty-one billion, three hundred forty-three million, nine hundred fourteen thousand, nine hundred nineteen".