1531253223 has 48 divisors (see below), whose sum is σ = 2381835456. Its totient is φ = 944563200.

The previous prime is 1531253209. The next prime is 1531253233. The reversal of 1531253223 is 3223521351.

It is a happy number.

It is not a de Polignac number, because 1531253223 - 2²⁶ = 1464144359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531253233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3043990 + ... + 3044492.

It is an arithmetic number, because the mean of its divisors is an integer number (49621572).

Almost surely, 2^1531253223 is an apocalyptic number.

1531253223 is a deficient number, since it is larger than the sum of its proper divisors (850582233).

1531253223 is a wasteful number, since it uses less digits than its factorization.

1531253223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 821 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 1531253223 is about 39131.2307882080. The cubic root of 1531253223 is about 1152.6098816908.

Adding to 1531253223 its reverse (3223521351), we get a palindrome (4754774574).

The spelling of 1531253223 in words is "one billion, five hundred thirty-one million, two hundred fifty-three thousand, two hundred twenty-three".