31403112116 has 12 divisors (see below), whose sum is σ = 54956868288. Its totient is φ = 15701149752.

The previous prime is 31403112071. The next prime is 31403112131. The reversal of 31403112116 is 61121130413.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31403112091 and 31403112100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132005 + ... + 283251.

It is an arithmetic number, because the mean of its divisors is an integer number (4579739024).

Almost surely, 2^31403112116 is an apocalyptic number.

It is an amenable number.

31403112116 is a deficient number, since it is larger than the sum of its proper divisors (23553756172).

31403112116 is a wasteful number, since it uses less digits than its factorization.

31403112116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203158 (or 203156 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 31403112116 its reverse (61121130413), we get a palindrome (92524242529).

The spelling of 31403112116 in words is "thirty-one billion, four hundred three million, one hundred twelve thousand, one hundred sixteen".