1123120531 has 16 divisors (see below), whose sum is σ = 1231213984. Its totient is φ = 1018220544.

The previous prime is 1123120517. The next prime is 1123120561. The reversal of 1123120531 is 1350213211.

It is a cyclic number.

It is not a de Polignac number, because 1123120531 - 2¹⁷ = 1122989459 is a prime.

It is a super-2 number, since 2×1123120531² = 2522799454307443922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123120499 and 1123120508.

It is not an unprimeable number, because it can be changed into a prime (1123120561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323155 + ... + 326611.

It is an arithmetic number, because the mean of its divisors is an integer number (76950874).

Almost surely, 2^1123120531 is an apocalyptic number.

1123120531 is a deficient number, since it is larger than the sum of its proper divisors (108093453).

1123120531 is a wasteful number, since it uses less digits than its factorization.

1123120531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1123120531 is about 33512.9904813044. The cubic root of 1123120531 is about 1039.4624104621.

Adding to 1123120531 its reverse (1350213211), we get a palindrome (2473333742).

The spelling of 1123120531 in words is "one billion, one hundred twenty-three million, one hundred twenty thousand, five hundred thirty-one".