31000011110212 has 24 divisors (see below), whose sum is σ = 55300064866200. Its totient is φ = 15200272578816.

The previous prime is 31000011110203. The next prime is 31000011110221. The reversal of 31000011110212 is 21201111000013.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31000011110203) and next prime (31000011110221).

It can be written as a sum of positive squares in 4 ways, for example, as 17167979017476 + 13832032092736 = 4143426^2 + 3719144^2 .

It is a super-2 number, since 2×31000011110212² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31000011110192 and 31000011110201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34556287 + ... + 35442022.

It is an arithmetic number, because the mean of its divisors is an integer number (2304169369425).

Almost surely, 2^{31000011110212} is an apocalyptic number.

It is an amenable number.

31000011110212 is a deficient number, since it is larger than the sum of its proper divisors (24300053755988).

31000011110212 is a wasteful number, since it uses less digits than its factorization.

31000011110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70000455 (or 70000453 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 31000011110212 its reverse (21201111000013), we get a palindrome (52201122110225).

The spelling of 31000011110212 in words is "thirty-one trillion, eleven million, one hundred ten thousand, two hundred twelve".