31111110202312 has 64 divisors (see below), whose sum is σ = 68966834976000. Its totient is φ = 12873316490496.

The previous prime is 31111110202301. The next prime is 31111110202313. The reversal of 31111110202312 is 21320201111113.

It is a self number, because there is not a number n which added to its sum of digits gives 31111110202312.

It is not an unprimeable number, because it can be changed into a prime (31111110202313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102366514 + ... + 102669982.

It is an arithmetic number, because the mean of its divisors is an integer number (1077606796500).

Almost surely, 2^{31111110202312} is an apocalyptic number.

It is an amenable number.

31111110202312 is an abundant number, since it is smaller than the sum of its proper divisors (37855724773688).

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

31111110202312 is a wasteful number, since it uses less digits than its factorization.

31111110202312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366638 (or 366634 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 31111110202312 its reverse (21320201111113), we get a palindrome (52431311313425).

The spelling of 31111110202312 in words is "thirty-one trillion, one hundred eleven billion, one hundred ten million, two hundred two thousand, three hundred twelve".