1133420231 has 4 divisors (see below), whose sum is σ = 1133679552. Its totient is φ = 1133160912.

The previous prime is 1133420201. The next prime is 1133420237. The reversal of 1133420231 is 1320243311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1133420231 - 2²² = 1129225927 is a prime.

It is a super-2 number, since 2×1133420231² = 2569282840080186722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133420237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122990 + ... + 131883.

It is an arithmetic number, because the mean of its divisors is an integer number (283419888).

Almost surely, 2^1133420231 is an apocalyptic number.

1133420231 is a deficient number, since it is larger than the sum of its proper divisors (259321).

1133420231 is an equidigital number, since it uses as much as digits as its factorization.

1133420231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259320.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1133420231 is about 33666.3070591355. The cubic root of 1133420231 is about 1042.6302477838.

Adding to 1133420231 its reverse (1320243311), we get a palindrome (2453663542).

The spelling of 1133420231 in words is "one billion, one hundred thirty-three million, four hundred twenty thousand, two hundred thirty-one".