312100321223 has 2 divisors, whose sum is σ = 312100321224. Its totient is φ = 312100321222.

The previous prime is 312100321217. The next prime is 312100321289. The reversal of 312100321223 is 322123001213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312100321223 - 2¹² = 312100317127 is a prime.

It is a super-2 number, since 2×312100321223² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312100321195 and 312100321204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312100320223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156050160611 + 156050160612.

It is an arithmetic number, because the mean of its divisors is an integer number (156050160612).

Almost surely, 2^312100321223 is an apocalyptic number.

312100321223 is a deficient number, since it is larger than the sum of its proper divisors (1).

312100321223 is an equidigital number, since it uses as much as digits as its factorization.

312100321223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 312100321223 its reverse (322123001213), we get a palindrome (634223322436).

The spelling of 312100321223 in words is "three hundred twelve billion, one hundred million, three hundred twenty-one thousand, two hundred twenty-three".