1123502331 has 40 divisors (see below), whose sum is σ = 1776909584. Its totient is φ = 631229760.

The previous prime is 1123502327. The next prime is 1123502407. The reversal of 1123502331 is 1332053211.

It is not a de Polignac number, because 1123502331 - 2² = 1123502327 is a prime.

It is a super-2 number, since 2×1123502331² = 2524514975524867122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123502298 and 1123502307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123502531) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 438105 + ... + 440661.

Almost surely, 2^1123502331 is an apocalyptic number.

1123502331 is a deficient number, since it is larger than the sum of its proper divisors (653407253).

1123502331 is an frugal number, since it uses more digits than its factorization.

1123502331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649 (or 2628 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1123502331 is about 33518.6862958559. The cubic root of 1123502331 is about 1039.5801840447.

Adding to 1123502331 its reverse (1332053211), we get a palindrome (2455555542).

The spelling of 1123502331 in words is "one billion, one hundred twenty-three million, five hundred two thousand, three hundred thirty-one".