31011113333212 has 36 divisors (see below), whose sum is σ = 56216679784720. Its totient is φ = 14967861374592.

The previous prime is 31011113333197. The next prime is 31011113333243. The reversal of 31011113333212 is 21233331111013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15788113 + ... + 17643319.

Almost surely, 2^{31011113333212} is an apocalyptic number.

It is an amenable number.

31011113333212 is a deficient number, since it is larger than the sum of its proper divisors (25205566451508).

31011113333212 is a wasteful number, since it uses less digits than its factorization.

31011113333212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860238 (or 1860207 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 31011113333212 its reverse (21233331111013), we get a palindrome (52244444444225).

The spelling of 31011113333212 in words is "thirty-one trillion, eleven billion, one hundred thirteen million, three hundred thirty-three thousand, two hundred twelve".