1131333423 has 48 divisors (see below), whose sum is σ = 1718521728. Its totient is φ = 661003200.

The previous prime is 1131333419. The next prime is 1131333433. The reversal of 1131333423 is 3243331311.

It is a happy number.

It is not a de Polignac number, because 1131333423 - 2² = 1131333419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131333393 and 1131333402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131333433) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1759140 + ... + 1759782.

It is an arithmetic number, because the mean of its divisors is an integer number (35802536).

Almost surely, 2^1131333423 is an apocalyptic number.

1131333423 is a deficient number, since it is larger than the sum of its proper divisors (587188305).

1131333423 is a wasteful number, since it uses less digits than its factorization.

1131333423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836 (or 825 counting only the distinct ones).

The product of its digits is 1944, while the sum is 24.

The square root of 1131333423 is about 33635.3002513728. The cubic root of 1131333423 is about 1041.9899716346.

Adding to 1131333423 its reverse (3243331311), we get a palindrome (4374664734).

The spelling of 1131333423 in words is "one billion, one hundred thirty-one million, three hundred thirty-three thousand, four hundred twenty-three".