31435123010105 has 32 divisors (see below), whose sum is σ = 38269515225600. Its totient is φ = 24784391503872.

The previous prime is 31435123010047. The next prime is 31435123010131. The reversal of 31435123010105 is 50101032153413.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31435123010105 is a prime.

It is a super-2 number, since 2×31435123010105² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 504764249 + ... + 504826521.

It is an arithmetic number, because the mean of its divisors is an integer number (1195922350800).

Almost surely, 2^{31435123010105} is an apocalyptic number.

It is an amenable number.

31435123010105 is a deficient number, since it is larger than the sum of its proper divisors (6834392215495).

31435123010105 is a wasteful number, since it uses less digits than its factorization.

31435123010105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64673.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 31435123010105 its reverse (50101032153413), we get a palindrome (81536155163518).

The spelling of 31435123010105 in words is "thirty-one trillion, four hundred thirty-five billion, one hundred twenty-three million, ten thousand, one hundred five".