31431004122111 has 32 divisors (see below), whose sum is σ = 45857689532160. Its totient is φ = 18990820569600.

The previous prime is 31431004122061. The next prime is 31431004122127. The reversal of 31431004122111 is 11122140013413.

It is not a de Polignac number, because 31431004122111 - 2¹⁵ = 31431004089343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31431004122611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 478274391 + ... + 478340103.

It is an arithmetic number, because the mean of its divisors is an integer number (1433052797880).

Almost surely, 2^{31431004122111} is an apocalyptic number.

31431004122111 is a deficient number, since it is larger than the sum of its proper divisors (14426685410049).

31431004122111 is a wasteful number, since it uses less digits than its factorization.

31431004122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109847.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 31431004122111 its reverse (11122140013413), we get a palindrome (42553144135524).

The spelling of 31431004122111 in words is "thirty-one trillion, four hundred thirty-one billion, four million, one hundred twenty-two thousand, one hundred eleven".