313155503 has 4 divisors (see below), whose sum is σ = 313960920. Its totient is φ = 312350088.

The previous prime is 313155467. The next prime is 313155523. The reversal of 313155503 is 305551313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313155503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313155523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402125 + ... + 402902.

It is an arithmetic number, because the mean of its divisors is an integer number (78490230).

Almost surely, 2^313155503 is an apocalyptic number.

313155503 is a deficient number, since it is larger than the sum of its proper divisors (805417).

313155503 is an equidigital number, since it uses as much as digits as its factorization.

313155503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805416.

The product of its (nonzero) digits is 3375, while the sum is 26.

The square root of 313155503 is about 17696.2002418598. The cubic root of 313155503 is about 679.0785551461.

The spelling of 313155503 in words is "three hundred thirteen million, one hundred fifty-five thousand, five hundred three".