311221212232103 has 8 divisors (see below), whose sum is σ = 313131728805888. Its totient is φ = 309310710097464.

The previous prime is 311221212232093. The next prime is 311221212232111. The reversal of 311221212232103 is 301232212122113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311221212232103 is a prime.

It is a super-3 number, since 3×311221212232103³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311221212222103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41343476 + ... + 48287942.

It is an arithmetic number, because the mean of its divisors is an integer number (39141466100736).

Almost surely, 2^{311221212232103} is an apocalyptic number.

311221212232103 is a deficient number, since it is larger than the sum of its proper divisors (1910516573785).

311221212232103 is a wasteful number, since it uses less digits than its factorization.

311221212232103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7219573.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 311221212232103 its reverse (301232212122113), we get a palindrome (612453424354216).

The spelling of 311221212232103 in words is "three hundred eleven trillion, two hundred twenty-one billion, two hundred twelve million, two hundred thirty-two thousand, one hundred three".