1311133031 has 8 divisors (see below), whose sum is σ = 1412916960. Its totient is φ = 1209481632.

The previous prime is 1311133013. The next prime is 1311133051. The reversal of 1311133031 is 1303311131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311133031 - 2¹⁰ = 1311132007 is a prime.

It is a super-2 number, since 2×1311133031² = 3438139649958493922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311133001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12080 + ... + 52613.

It is an arithmetic number, because the mean of its divisors is an integer number (176614620).

Almost surely, 2^1311133031 is an apocalyptic number.

1311133031 is a deficient number, since it is larger than the sum of its proper divisors (101783929).

1311133031 is a wasteful number, since it uses less digits than its factorization.

1311133031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66265.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 1311133031 is about 36209.5709861357. The cubic root of 1311133031 is about 1094.4995471006.

Adding to 1311133031 its reverse (1303311131), we get a palindrome (2614444162).

The spelling of 1311133031 in words is "one billion, three hundred eleven million, one hundred thirty-three thousand, thirty-one".