31005103403105 has 32 divisors (see below), whose sum is σ = 40541059609344. Its totient is φ = 22627417971456.

The previous prime is 31005103403059. The next prime is 31005103403137. The reversal of 31005103403105 is 50130430150013.

It is a cyclic number.

It is not a de Polignac number, because 31005103403105 - 2¹⁰ = 31005103402081 is a prime.

It is a super-2 number, since 2×31005103403105² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 6377279 + ... + 10133108.

It is an arithmetic number, because the mean of its divisors is an integer number (1266908112792).

Almost surely, 2^{31005103403105} is an apocalyptic number.

It is an amenable number.

31005103403105 is a deficient number, since it is larger than the sum of its proper divisors (9535956206239).

31005103403105 is a wasteful number, since it uses less digits than its factorization.

31005103403105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16510745.

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

Adding to 31005103403105 its reverse (50130430150013), we get a palindrome (81135533553118).

The spelling of 31005103403105 in words is "thirty-one trillion, five billion, one hundred three million, four hundred three thousand, one hundred five".