1311013233 has 6 divisors (see below), whose sum is σ = 1893685794. Its totient is φ = 874008816.

The previous prime is 1311013211. The next prime is 1311013261. The reversal of 1311013233 is 3323101131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1151041329 + 159971904 = 33927^2 + 12648^2 .

It is not a de Polignac number, because 1311013233 - 2¹³ = 1311005041 is a prime.

It is a super-2 number, since 2×1311013233² = 3437511394202224578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311013273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72834060 + ... + 72834077.

It is an arithmetic number, because the mean of its divisors is an integer number (315614299).

Almost surely, 2^1311013233 is an apocalyptic number.

It is an amenable number.

1311013233 is a deficient number, since it is larger than the sum of its proper divisors (582672561).

1311013233 is a wasteful number, since it uses less digits than its factorization.

1311013233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145668143 (or 145668140 counting only the distinct ones).

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

The square root of 1311013233 is about 36207.9167172043. The cubic root of 1311013233 is about 1094.4662113400.

Adding to 1311013233 its reverse (3323101131), we get a palindrome (4634114364).

The spelling of 1311013233 in words is "one billion, three hundred eleven million, thirteen thousand, two hundred thirty-three".