1131423313 has 4 divisors (see below), whose sum is σ = 1170437940. Its totient is φ = 1092408688.

The previous prime is 1131423299. The next prime is 1131423317. The reversal of 1131423313 is 3133241311.

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

It can be written as a sum of positive squares in 2 ways, for example, as 942305809 + 189117504 = 30697^2 + 13752^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131423313 - 2¹³ = 1131415121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131423317) 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, 19507270 + ... + 19507327.

It is an arithmetic number, because the mean of its divisors is an integer number (292609485).

Almost surely, 2^1131423313 is an apocalyptic number.

It is an amenable number.

1131423313 is a deficient number, since it is larger than the sum of its proper divisors (39014627).

1131423313 is an equidigital number, since it uses as much as digits as its factorization.

1131423313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39014626.

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

The square root of 1131423313 is about 33636.6364697780. The cubic root of 1131423313 is about 1042.0175679783.

Adding to 1131423313 its reverse (3133241311), we get a palindrome (4264664624).

The spelling of 1131423313 in words is "one billion, one hundred thirty-one million, four hundred twenty-three thousand, three hundred thirteen".