31347277349 has 4 divisors (see below), whose sum is σ = 31401605964. Its totient is φ = 31292948736.

The previous prime is 31347277303. The next prime is 31347277387. The reversal of 31347277349 is 94377274313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20683617124 + 10663660225 = 143818^2 + 103265^2 .

It is a cyclic number.

It is not a de Polignac number, because 31347277349 - 2¹⁶ = 31347211813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31347277297 and 31347277306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31347270349) 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, 27163442 + ... + 27164595.

It is an arithmetic number, because the mean of its divisors is an integer number (7850401491).

Almost surely, 2^31347277349 is an apocalyptic number.

It is an amenable number.

31347277349 is a deficient number, since it is larger than the sum of its proper divisors (54328615).

31347277349 is an equidigital number, since it uses as much as digits as its factorization.

31347277349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54328614.

The product of its digits is 2667168, while the sum is 50.

The spelling of 31347277349 in words is "thirty-one billion, three hundred forty-seven million, two hundred seventy-seven thousand, three hundred forty-nine".