31103011040105 has 16 divisors (see below), whose sum is σ = 38111062803984. Its totient is φ = 24362418447360.

The previous prime is 31103011040093. The next prime is 31103011040119. The reversal of 31103011040105 is 50104011030113.

It can be written as a sum of positive squares in 8 ways, for example, as 1375890649 + 31101635149456 = 37093^2 + 5576884^2 .

It is not a de Polignac number, because 31103011040105 - 2⁶ = 31103011040041 is a prime.

It is a super-2 number, since 2×31103011040105² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310949006 + ... + 311049015.

It is an arithmetic number, because the mean of its divisors is an integer number (2381941425249).

Almost surely, 2^{31103011040105} is an apocalyptic number.

It is an amenable number.

31103011040105 is a deficient number, since it is larger than the sum of its proper divisors (7008051763879).

31103011040105 is a wasteful number, since it uses less digits than its factorization.

31103011040105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621998236.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 31103011040105 its reverse (50104011030113), we get a palindrome (81207022070218).

The spelling of 31103011040105 in words is "thirty-one trillion, one hundred three billion, eleven million, forty thousand, one hundred five".