531123419 has 4 divisors (see below), whose sum is σ = 545478144. Its totient is φ = 516768696.

The previous prime is 531123413. The next prime is 531123421. The reversal of 531123419 is 914321135.

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 531123419 - 2²⁰ = 530074843 is a prime.

It is a super-2 number, since 2×531123419² = 564184172420499122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531123391 and 531123400.

It is not an unprimeable number, because it can be changed into a prime (531123413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7177307 + ... + 7177380.

It is an arithmetic number, because the mean of its divisors is an integer number (136369536).

Almost surely, 2^531123419 is an apocalyptic number.

531123419 is a deficient number, since it is larger than the sum of its proper divisors (14354725).

531123419 is a wasteful number, since it uses less digits than its factorization.

531123419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14354724.

The product of its digits is 3240, while the sum is 29.

The square root of 531123419 is about 23046.1150522165. The cubic root of 531123419 is about 809.8386199860.

The spelling of 531123419 in words is "five hundred thirty-one million, one hundred twenty-three thousand, four hundred nineteen".