31324312111 has 4 divisors (see below), whose sum is σ = 32334773824. Its totient is φ = 30313850400.

The previous prime is 31324312091. The next prime is 31324312127. The reversal of 31324312111 is 11121342313.

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 31324312111 - 2⁷ = 31324311983 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 (31324312181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505230810 + ... + 505230871.

It is an arithmetic number, because the mean of its divisors is an integer number (8083693456).

Almost surely, 2^31324312111 is an apocalyptic number.

31324312111 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31324312111 is a deficient number, since it is larger than the sum of its proper divisors (1010461713).

31324312111 is a wasteful number, since it uses less digits than its factorization.

31324312111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010461712.

The product of its digits is 432, while the sum is 22.

Adding to 31324312111 its reverse (11121342313), we get a palindrome (42445654424).

The spelling of 31324312111 in words is "thirty-one billion, three hundred twenty-four million, three hundred twelve thousand, one hundred eleven".