31313432111 has 8 divisors (see below), whose sum is σ = 33723733680. Its totient is φ = 28903355712.

The previous prime is 31313432099. The next prime is 31313432113. The reversal of 31313432111 is 11123431313.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31313432111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313432113) 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 7 ways as a sum of consecutive naturals, for example, 331556 + ... + 415398.

It is an arithmetic number, because the mean of its divisors is an integer number (4215466710).

Almost surely, 2^31313432111 is an apocalyptic number.

31313432111 is a deficient number, since it is larger than the sum of its proper divisors (2410301569).

31313432111 is a wasteful number, since it uses less digits than its factorization.

31313432111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112585.

The product of its digits is 648, while the sum is 23.

Adding to 31313432111 its reverse (11123431313), we get a palindrome (42436863424).

The spelling of 31313432111 in words is "thirty-one billion, three hundred thirteen million, four hundred thirty-two thousand, one hundred eleven".