1123502431 has 6 divisors (see below), whose sum is σ = 1140525960. Its totient is φ = 1106729316.

The previous prime is 1123502417. The next prime is 1123502437. The reversal of 1123502431 is 1342053211.

It is a happy number.

It is not a de Polignac number, because 1123502431 - 2¹¹ = 1123500383 is a prime.

It is a super-2 number, since 2×1123502431² = 2524515424925819522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123502437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120651 + ... + 129628.

It is an arithmetic number, because the mean of its divisors is an integer number (190087660).

Almost surely, 2^1123502431 is an apocalyptic number.

1123502431 is a deficient number, since it is larger than the sum of its proper divisors (17023529).

1123502431 is an frugal number, since it uses more digits than its factorization.

1123502431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250413 (or 250346 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1123502431 is about 33518.6877875611. The cubic root of 1123502431 is about 1039.5802148881.

Adding to 1123502431 its reverse (1342053211), we get a palindrome (2465555642).

The spelling of 1123502431 in words is "one billion, one hundred twenty-three million, five hundred two thousand, four hundred thirty-one".