253431523 has 8 divisors (see below), whose sum is σ = 256543056. Its totient is φ = 250332000.

The previous prime is 253431511. The next prime is 253431527. The reversal of 253431523 is 325134352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253431523 - 2⁹ = 253431011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253431491 and 253431500.

It is not an unprimeable number, because it can be changed into a prime (253431527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43840 + ... + 49282.

It is an arithmetic number, because the mean of its divisors is an integer number (32067882).

Almost surely, 2^253431523 is an apocalyptic number.

253431523 is a deficient number, since it is larger than the sum of its proper divisors (3111533).

253431523 is a wasteful number, since it uses less digits than its factorization.

253431523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6005.

The product of its digits is 10800, while the sum is 28.

The square root of 253431523 is about 15919.5327506808. The cubic root of 253431523 is about 632.8297357411.

Adding to 253431523 its reverse (325134352), we get a palindrome (578565875).

The spelling of 253431523 in words is "two hundred fifty-three million, four hundred thirty-one thousand, five hundred twenty-three".