503400035023 has 4 divisors (see below), whose sum is σ = 503416206520. Its totient is φ = 503383863528.

The previous prime is 503400034993. The next prime is 503400035027. The reversal of 503400035023 is 320530004305.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 503400035023 - 2³³ = 494810100431 is a prime.

It is a super-2 number, since 2×503400035023² (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 (503400035027) 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, 8038965 + ... + 8101342.

It is an arithmetic number, because the mean of its divisors is an integer number (125854051630).

Almost surely, 2^503400035023 is an apocalyptic number.

503400035023 is a deficient number, since it is larger than the sum of its proper divisors (16171497).

503400035023 is a wasteful number, since it uses less digits than its factorization.

503400035023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16171496.

The product of its (nonzero) digits is 5400, while the sum is 25.

Adding to 503400035023 its reverse (320530004305), we get a palindrome (823930039328).

The spelling of 503400035023 in words is "five hundred three billion, four hundred million, thirty-five thousand, twenty-three".