31302111102 has 32 divisors (see below), whose sum is σ = 62834942592. Its totient is φ = 10395656544.

The previous prime is 31302111083. The next prime is 31302111107. The reversal of 31302111102 is 20111120313.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31302111107) 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 15 ways as a sum of consecutive naturals, for example, 1819513 + ... + 1836635.

It is an arithmetic number, because the mean of its divisors is an integer number (1963591956).

Almost surely, 2^31302111102 is an apocalyptic number.

31302111102 is an abundant number, since it is smaller than the sum of its proper divisors (31532831490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31302111102 is a wasteful number, since it uses less digits than its factorization.

31302111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18232.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31302111102 its reverse (20111120313), we get a palindrome (51413231415).

It can be divided in two parts, 3130211 and 1102, that added together give a palindrome (3131313).

The spelling of 31302111102 in words is "thirty-one billion, three hundred two million, one hundred eleven thousand, one hundred two".