315120312503 has 4 divisors (see below), whose sum is σ = 315121437408. Its totient is φ = 315119187600.

The previous prime is 315120312499. The next prime is 315120312557. The reversal of 315120312503 is 305213021513.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 305213021513 = 883 ⋅345654611.

It is a cyclic number.

It is not a de Polignac number, because 315120312503 - 2² = 315120312499 is a prime.

It is a super-2 number, since 2×315120312503² (a number of 24 digits) contains 22 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 (315120312583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228578 + ... + 826128.

It is an arithmetic number, because the mean of its divisors is an integer number (78780359352).

Almost surely, 2^315120312503 is an apocalyptic number.

315120312503 is a deficient number, since it is larger than the sum of its proper divisors (1124905).

315120312503 is an equidigital number, since it uses as much as digits as its factorization.

315120312503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124904.

The product of its (nonzero) digits is 2700, while the sum is 26.

The spelling of 315120312503 in words is "three hundred fifteen billion, one hundred twenty million, three hundred twelve thousand, five hundred three".