31111011012212 has 48 divisors (see below), whose sum is σ = 56219062972800. Its totient is φ = 15059003839488.

The previous prime is 31111011012163. The next prime is 31111011012233. The reversal of 31111011012212 is 21221011011113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1178462 + ... + 7975637.

It is an arithmetic number, because the mean of its divisors is an integer number (1171230478600).

Almost surely, 2^{31111011012212} is an apocalyptic number.

It is an amenable number.

31111011012212 is a deficient number, since it is larger than the sum of its proper divisors (25108051960588).

31111011012212 is a wasteful number, since it uses less digits than its factorization.

31111011012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9154392 (or 9154390 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 31111011012212 its reverse (21221011011113), we get a palindrome (52332022023325).

The spelling of 31111011012212 in words is "thirty-one trillion, one hundred eleven billion, eleven million, twelve thousand, two hundred twelve".