1131523433 has 16 divisors (see below), whose sum is σ = 1205193600. Its totient is φ = 1060101504.

The previous prime is 1131523427. The next prime is 1131523489. The reversal of 1131523433 is 3343251311.

It is a cyclic number.

It is not a de Polignac number, because 1131523433 - 2⁶ = 1131523369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131523423) 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, 247910 + ... + 252432.

It is an arithmetic number, because the mean of its divisors is an integer number (75324600).

Almost surely, 2^1131523433 is an apocalyptic number.

It is an amenable number.

1131523433 is a deficient number, since it is larger than the sum of its proper divisors (73670167).

1131523433 is a wasteful number, since it uses less digits than its factorization.

1131523433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4768.

The product of its digits is 3240, while the sum is 26.

The square root of 1131523433 is about 33638.1246950540. The cubic root of 1131523433 is about 1042.0483032244.

Adding to 1131523433 its reverse (3343251311), we get a palindrome (4474774744).

The spelling of 1131523433 in words is "one billion, one hundred thirty-one million, five hundred twenty-three thousand, four hundred thirty-three".