31212300311 has 16 divisors (see below), whose sum is σ = 32180649600. Its totient is φ = 30263321088.

The previous prime is 31212300299. The next prime is 31212300337. The reversal of 31212300311 is 11300321213.

It is a cyclic number.

It is not a de Polignac number, because 31212300311 - 2⁶ = 31212300247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31212300311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212300341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 957005 + ... + 989081.

It is an arithmetic number, because the mean of its divisors is an integer number (2011290600).

Almost surely, 2^31212300311 is an apocalyptic number.

31212300311 is a deficient number, since it is larger than the sum of its proper divisors (968349289).

31212300311 is a wasteful number, since it uses less digits than its factorization.

31212300311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32378.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31212300311 its reverse (11300321213), we get a palindrome (42512621524).

The spelling of 31212300311 in words is "thirty-one billion, two hundred twelve million, three hundred thousand, three hundred eleven".