1123531413 has 8 divisors (see below), whose sum is σ = 1498216608. Its totient is φ = 748933584.

The previous prime is 1123531403. The next prime is 1123531421. The reversal of 1123531413 is 3141353211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1123531413 - 2⁴ = 1123531397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123531403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19170 + ... + 51132.

It is an arithmetic number, because the mean of its divisors is an integer number (187277076).

Almost surely, 2^1123531413 is an apocalyptic number.

It is an amenable number.

1123531413 is a deficient number, since it is larger than the sum of its proper divisors (374685195).

1123531413 is a wasteful number, since it uses less digits than its factorization.

1123531413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43683.

The product of its digits is 1080, while the sum is 24.

The square root of 1123531413 is about 33519.1201107666. The cubic root of 1123531413 is about 1039.5891538555.

Adding to 1123531413 its reverse (3141353211), we get a palindrome (4264884624).

The spelling of 1123531413 in words is "one billion, one hundred twenty-three million, five hundred thirty-one thousand, four hundred thirteen".