1311233104 has 10 divisors (see below), whose sum is σ = 2540514170. Its totient is φ = 655616544.

The previous prime is 1311233023. The next prime is 1311233107. The reversal of 1311233104 is 4013321131.

It can be written as a sum of positive squares in only one way, i.e., 1221362704 + 89870400 = 34948^2 + 9480^2 .

It is a super-3 number, since 3×1311233104³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311233107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40976019 + ... + 40976050.

It is an arithmetic number, because the mean of its divisors is an integer number (254051417).

Almost surely, 2^1311233104 is an apocalyptic number.

It is an amenable number.

1311233104 is a deficient number, since it is larger than the sum of its proper divisors (1229281066).

1311233104 is an equidigital number, since it uses as much as digits as its factorization.

1311233104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81952077 (or 81952071 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1311233104 is about 36210.9528181737. The cubic root of 1311233104 is about 1094.5273924995.

Adding to 1311233104 its reverse (4013321131), we get a palindrome (5324554235).

It can be divided in two parts, 131 and 1233104, that added together give a triangular number (1233235 = T₁₅₇₀).

The spelling of 1311233104 in words is "one billion, three hundred eleven million, two hundred thirty-three thousand, one hundred four".