311625102473 has 2 divisors, whose sum is σ = 311625102474. Its totient is φ = 311625102472.

The previous prime is 311625102427. The next prime is 311625102487. The reversal of 311625102473 is 374201526113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181602117904 + 130022984569 = 426148^2 + 360587^2 .

It is an emirp because it is prime and its reverse (374201526113) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311625102473 is a prime.

It is a super-3 number, since 3×311625102473³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (311625102493) 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 as a sum of consecutive naturals, namely, 155812551236 + 155812551237.

It is an arithmetic number, because the mean of its divisors is an integer number (155812551237).

Almost surely, 2^311625102473 is an apocalyptic number.

It is an amenable number.

311625102473 is a deficient number, since it is larger than the sum of its proper divisors (1).

311625102473 is an equidigital number, since it uses as much as digits as its factorization.

311625102473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

Adding to 311625102473 its reverse (374201526113), we get a palindrome (685826628586).

The spelling of 311625102473 in words is "three hundred eleven billion, six hundred twenty-five million, one hundred two thousand, four hundred seventy-three".