31113002012 has 6 divisors (see below), whose sum is σ = 54447753528. Its totient is φ = 15556501004.

The previous prime is 31113002009. The next prime is 31113002017. The reversal of 31113002012 is 21020031113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113002017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3889125248 + ... + 3889125255.

It is an arithmetic number, because the mean of its divisors is an integer number (9074625588).

Almost surely, 2^31113002012 is an apocalyptic number.

It is an amenable number.

31113002012 is a deficient number, since it is larger than the sum of its proper divisors (23334751516).

31113002012 is a wasteful number, since it uses less digits than its factorization.

31113002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7778250507 (or 7778250505 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 31113002012 its reverse (21020031113), we get a palindrome (52133033125).

The spelling of 31113002012 in words is "thirty-one billion, one hundred thirteen million, two thousand, twelve".