503256506323 has 4 divisors (see below), whose sum is σ = 503294129488. Its totient is φ = 503218883160.

The previous prime is 503256506303. The next prime is 503256506371. The reversal of 503256506323 is 323605652305.

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-503256506323 is a prime.

It is a super-2 number, since 2×503256506323² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503256506303) 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, 18791511 + ... + 18818272.

It is an arithmetic number, because the mean of its divisors is an integer number (125823532372).

Almost surely, 2^503256506323 is an apocalyptic number.

503256506323 is a deficient number, since it is larger than the sum of its proper divisors (37623165).

503256506323 is a wasteful number, since it uses less digits than its factorization.

503256506323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37623164.

The product of its (nonzero) digits is 486000, while the sum is 40.

The spelling of 503256506323 in words is "five hundred three billion, two hundred fifty-six million, five hundred six thousand, three hundred twenty-three".