312340503 has 4 divisors (see below), whose sum is σ = 416454008. Its totient is φ = 208227000.

The previous prime is 312340499. The next prime is 312340543. The reversal of 312340503 is 305043213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305043213 = 3 ⋅101681071.

It is not a de Polignac number, because 312340503 - 2² = 312340499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312340503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312340543) 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, 52056748 + ... + 52056753.

It is an arithmetic number, because the mean of its divisors is an integer number (104113502).

Almost surely, 2^312340503 is an apocalyptic number.

312340503 is a deficient number, since it is larger than the sum of its proper divisors (104113505).

312340503 is a wasteful number, since it uses less digits than its factorization.

312340503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104113504.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 312340503 is about 17673.1576974801. The cubic root of 312340503 is about 678.4889334437.

Adding to 312340503 its reverse (305043213), we get a palindrome (617383716).

The spelling of 312340503 in words is "three hundred twelve million, three hundred forty thousand, five hundred three".