1320311133 has 6 divisors (see below), whose sum is σ = 1907116094. Its totient is φ = 880207416.

The previous prime is 1320311131. The next prime is 1320311147. The reversal of 1320311133 is 3311130231.

It is a happy number.

1320311133 is a `hidden beast` number, since 1 + 320 + 311 + 1 + 33 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1271492964 + 48818169 = 35658^2 + 6987^2 .

It is not a de Polignac number, because 1320311133 - 2¹ = 1320311131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320311131) 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 5 ways as a sum of consecutive naturals, for example, 73350610 + ... + 73350627.

Almost surely, 2^1320311133 is an apocalyptic number.

It is an amenable number.

1320311133 is a deficient number, since it is larger than the sum of its proper divisors (586804961).

1320311133 is a wasteful number, since it uses less digits than its factorization.

1320311133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146701243 (or 146701240 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1320311133 is about 36336.0858238749. The cubic root of 1320311133 is about 1097.0474908025.

Adding to 1320311133 its reverse (3311130231), we get a palindrome (4631441364).

It can be divided in two parts, 13203 and 11133, that added together give a square (24336 = 156²).

The spelling of 1320311133 in words is "one billion, three hundred twenty million, three hundred eleven thousand, one hundred thirty-three".