31404020111 has 8 divisors (see below), whose sum is σ = 31546662000. Its totient is φ = 31261426560.

The previous prime is 31404020101. The next prime is 31404020129. The reversal of 31404020111 is 11102040413.

It is a happy number.

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-31404020111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31404020111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31404020101) 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, 2166215 + ... + 2180663.

It is an arithmetic number, because the mean of its divisors is an integer number (3943332750).

Almost surely, 2^31404020111 is an apocalyptic number.

31404020111 is a deficient number, since it is larger than the sum of its proper divisors (142641889).

31404020111 is a wasteful number, since it uses less digits than its factorization.

31404020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24169.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 31404020111 its reverse (11102040413), we get a palindrome (42506060524).

The spelling of 31404020111 in words is "thirty-one billion, four hundred four million, twenty thousand, one hundred eleven".