31143350105 has 64 divisors (see below), whose sum is σ = 45405868032. Its totient is φ = 20059176960.

The previous prime is 31143350027. The next prime is 31143350131. The reversal of 31143350105 is 50105334113.

It is not a de Polignac number, because 31143350105 - 2¹² = 31143346009 is a prime.

It is a super-2 number, since 2×31143350105² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5147192 + ... + 5153238.

It is an arithmetic number, because the mean of its divisors is an integer number (709466688).

Almost surely, 2^31143350105 is an apocalyptic number.

31143350105 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31143350105 is a deficient number, since it is larger than the sum of its proper divisors (14262517927).

31143350105 is a wasteful number, since it uses less digits than its factorization.

31143350105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6234.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 31143350105 its reverse (50105334113), we get a palindrome (81248684218).

The spelling of 31143350105 in words is "thirty-one billion, one hundred forty-three million, three hundred fifty thousand, one hundred five".