1224525231 has 24 divisors (see below), whose sum is σ = 1780623936. Its totient is φ = 810895680.

The previous prime is 1224525199. The next prime is 1224525271. The reversal of 1224525231 is 1325254221.

It is not a de Polignac number, because 1224525231 - 2⁵ = 1224525199 is a prime.

It is a super-2 number, since 2×1224525231² = 2998924082711206722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1224525195 and 1224525204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224525271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1109626 + ... + 1110728.

It is an arithmetic number, because the mean of its divisors is an integer number (74192664).

Almost surely, 2^1224525231 is an apocalyptic number.

1224525231 is a deficient number, since it is larger than the sum of its proper divisors (556098705).

1224525231 is a wasteful number, since it uses less digits than its factorization.

1224525231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823 (or 1820 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 1224525231 is about 34993.2169284277. The cubic root of 1224525231 is about 1069.8492322582.

Adding to 1224525231 its reverse (1325254221), we get a palindrome (2549779452).

The spelling of 1224525231 in words is "one billion, two hundred twenty-four million, five hundred twenty-five thousand, two hundred thirty-one".