31423141111 has 4 divisors (see below), whose sum is σ = 31456677952. Its totient is φ = 31389604272.

The previous prime is 31423141097. The next prime is 31423141117. The reversal of 31423141111 is 11114132413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31423141111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31423141117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16767015 + ... + 16768888.

It is an arithmetic number, because the mean of its divisors is an integer number (7864169488).

Almost surely, 2^31423141111 is an apocalyptic number.

31423141111 is a deficient number, since it is larger than the sum of its proper divisors (33536841).

31423141111 is an equidigital number, since it uses as much as digits as its factorization.

31423141111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33536840.

The product of its digits is 288, while the sum is 22.

Adding to 31423141111 its reverse (11114132413), we get a palindrome (42537273524).

The spelling of 31423141111 in words is "thirty-one billion, four hundred twenty-three million, one hundred forty-one thousand, one hundred eleven".