31423120111 has 8 divisors (see below), whose sum is σ = 31465833984. Its totient is φ = 31380437400.

The previous prime is 31423120109. The next prime is 31423120139. The reversal of 31423120111 is 11102132413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31423120111 - 2¹ = 31423120109 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 (31423120171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2543796 + ... + 2556118.

It is an arithmetic number, because the mean of its divisors is an integer number (3933229248).

Almost surely, 2^31423120111 is an apocalyptic number.

31423120111 is a deficient number, since it is larger than the sum of its proper divisors (42713873).

31423120111 is a wasteful number, since it uses less digits than its factorization.

31423120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15581.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31423120111 its reverse (11102132413), we get a palindrome (42525252524).

The spelling of 31423120111 in words is "thirty-one billion, four hundred twenty-three million, one hundred twenty thousand, one hundred eleven".