531379523 has 4 divisors (see below), whose sum is σ = 562637160. Its totient is φ = 500121888.

The previous prime is 531379507. The next prime is 531379543. The reversal of 531379523 is 325973135.

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 531379523 - 2⁴ = 531379507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531379543) 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, 15628793 + ... + 15628826.

It is an arithmetic number, because the mean of its divisors is an integer number (140659290).

Almost surely, 2^531379523 is an apocalyptic number.

531379523 is a deficient number, since it is larger than the sum of its proper divisors (31257637).

531379523 is a wasteful number, since it uses less digits than its factorization.

531379523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31257636.

The product of its digits is 85050, while the sum is 38.

The square root of 531379523 is about 23051.6707203621. The cubic root of 531379523 is about 809.9687652438.

The spelling of 531379523 in words is "five hundred thirty-one million, three hundred seventy-nine thousand, five hundred twenty-three".