31344051305 has 32 divisors (see below), whose sum is σ = 43462738944. Its totient is φ = 21255607296.

The previous prime is 31344051301. The next prime is 31344051329. The reversal of 31344051305 is 50315044313.

It is not a de Polignac number, because 31344051305 - 2² = 31344051301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31344051301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1822607 + ... + 1839723.

It is an arithmetic number, because the mean of its divisors is an integer number (1358210592).

Almost surely, 2^31344051305 is an apocalyptic number.

31344051305 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31344051305 is a deficient number, since it is larger than the sum of its proper divisors (12118687639).

31344051305 is a wasteful number, since it uses less digits than its factorization.

31344051305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17705.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 31344051305 its reverse (50315044313), we get a palindrome (81659095618).

The spelling of 31344051305 in words is "thirty-one billion, three hundred forty-four million, fifty-one thousand, three hundred five".