31424330111 has 4 divisors (see below), whose sum is σ = 31460743872. Its totient is φ = 31387916352.

The previous prime is 31424330107. The next prime is 31424330159. The reversal of 31424330111 is 11103342413.

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

It is a cyclic number.

It is not a de Polignac number, because 31424330111 - 2² = 31424330107 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 (31424330411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18205586 + ... + 18207311.

It is an arithmetic number, because the mean of its divisors is an integer number (7865185968).

Almost surely, 2^31424330111 is an apocalyptic number.

31424330111 is a deficient number, since it is larger than the sum of its proper divisors (36413761).

31424330111 is an equidigital number, since it uses as much as digits as its factorization.

31424330111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36413760.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31424330111 its reverse (11103342413), we get a palindrome (42527672524).

The spelling of 31424330111 in words is "thirty-one billion, four hundred twenty-four million, three hundred thirty thousand, one hundred eleven".