2385531 has 12 divisors (see below), whose sum is σ = 3573752. Its totient is φ = 1590192.

The previous prime is 2385499. The next prime is 2385541. The reversal of 2385531 is 1355832.

It is not a de Polignac number, because 2385531 - 2⁵ = 2385499 is a prime.

It is a super-2 number, since 2×2385531² = 11381516303922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

2385531 is a lucky number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 2385495 and 2385504.

It is not an unprimeable number, because it can be changed into a prime (2385541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4666 + ... + 5151.

2^2385531 is an apocalyptic number.

2385531 is a deficient number, since it is larger than the sum of its proper divisors (1188221).

2385531 is an frugal number, since it uses more digits than its factorization.

2385531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9832 (or 9820 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 2385531 is about 1544.5164291778. The cubic root of 2385531 is about 133.6169912474.

It can be divided in two parts, 2385 and 531, that added together give a square (2916 = 54²).

The spelling of 2385531 in words is "two million, three hundred eighty-five thousand, five hundred thirty-one".