1131123433 has 4 divisors (see below), whose sum is σ = 1233952848. Its totient is φ = 1028294020.

The previous prime is 1131123421. The next prime is 1131123473. The reversal of 1131123433 is 3343211311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3343211311 = 11 ⋅303928301.

It is a cyclic number.

It is not a de Polignac number, because 1131123433 - 2²¹ = 1129026281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131123473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51414691 + ... + 51414712.

It is an arithmetic number, because the mean of its divisors is an integer number (308488212).

Almost surely, 2^1131123433 is an apocalyptic number.

It is an amenable number.

1131123433 is a deficient number, since it is larger than the sum of its proper divisors (102829415).

1131123433 is a wasteful number, since it uses less digits than its factorization.

1131123433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102829414.

The product of its digits is 648, while the sum is 22.

The square root of 1131123433 is about 33632.1785348496. The cubic root of 1131123433 is about 1041.9254987424.

Adding to 1131123433 its reverse (3343211311), we get a palindrome (4474334744).

The spelling of 1131123433 in words is "one billion, one hundred thirty-one million, one hundred twenty-three thousand, four hundred thirty-three".