1312133011 has 4 divisors (see below), whose sum is σ = 1499580592. Its totient is φ = 1124685432.

The previous prime is 1312132999. The next prime is 1312133023. The reversal of 1312133011 is 1103312131.

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

It is an interprime number because it is at equal distance from previous prime (1312132999) and next prime (1312133023).

It is a cyclic number.

It is not a de Polignac number, because 1312133011 - 2⁵ = 1312132979 is a prime.

It is a super-2 number, since 2×1312133011² = 3443386077111852242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312133071) 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, 93723780 + ... + 93723793.

It is an arithmetic number, because the mean of its divisors is an integer number (374895148).

Almost surely, 2^1312133011 is an apocalyptic number.

1312133011 is a deficient number, since it is larger than the sum of its proper divisors (187447581).

1312133011 is an equidigital number, since it uses as much as digits as its factorization.

1312133011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187447580.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1312133011 is about 36223.3765819809. The cubic root of 1312133011 is about 1094.7777287705. Note that the first 4 decimals are identical.

Adding to 1312133011 its reverse (1103312131), we get a palindrome (2415445142).

The spelling of 1312133011 in words is "one billion, three hundred twelve million, one hundred thirty-three thousand, eleven".