531646423 has 36 divisors (see below), whose sum is σ = 716899032. Its totient is φ = 389786880.

The previous prime is 531646397. The next prime is 531646433. The reversal of 531646423 is 324646135.

It is not a de Polignac number, because 531646423 - 2²⁵ = 498091991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531646433) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 154065 + ... + 157477.

It is an arithmetic number, because the mean of its divisors is an integer number (19913862).

Almost surely, 2^531646423 is an apocalyptic number.

531646423 is a deficient number, since it is larger than the sum of its proper divisors (185252609).

531646423 is a wasteful number, since it uses less digits than its factorization.

531646423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472 (or 3448 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The square root of 531646423 is about 23057.4591618417. The cubic root of 531646423 is about 810.1043522520.

The spelling of 531646423 in words is "five hundred thirty-one million, six hundred forty-six thousand, four hundred twenty-three".