313221550143503 has 2 divisors, whose sum is σ = 313221550143504. Its totient is φ = 313221550143502.

The previous prime is 313221550143499. The next prime is 313221550143559. The reversal of 313221550143503 is 305341055122313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 313221550143503 - 2² = 313221550143499 is a prime.

It is a super-2 number, since 2×313221550143503² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313221550103503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156610775071751 + 156610775071752.

It is an arithmetic number, because the mean of its divisors is an integer number (156610775071752).

Almost surely, 2^{313221550143503} is an apocalyptic number.

313221550143503 is a deficient number, since it is larger than the sum of its proper divisors (1).

313221550143503 is an equidigital number, since it uses as much as digits as its factorization.

313221550143503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 313221550143503 in words is "three hundred thirteen trillion, two hundred twenty-one billion, five hundred fifty million, one hundred forty-three thousand, five hundred three".