1311013131 has 8 divisors (see below), whose sum is σ = 1748894784. Its totient is φ = 873570120.

The previous prime is 1311013127. The next prime is 1311013139. The reversal of 1311013131 is 1313101131.

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

It is not a de Polignac number, because 1311013131 - 2² = 1311013127 is a prime.

It is a super-2 number, since 2×1311013131² = 3437510859308846322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1311013131.

It is not an unprimeable number, because it can be changed into a prime (1311013139) 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, 102621 + ... + 114686.

It is an arithmetic number, because the mean of its divisors is an integer number (218611848).

Almost surely, 2^1311013131 is an apocalyptic number.

1311013131 is a deficient number, since it is larger than the sum of its proper divisors (437881653).

1311013131 is a wasteful number, since it uses less digits than its factorization.

1311013131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219321.

The product of its (nonzero) digits is 27, while the sum is 15.

The square root of 1311013131 is about 36207.9153086725. The cubic root of 1311013131 is about 1094.4661829560.

Adding to 1311013131 its reverse (1313101131), we get a palindrome (2624114262).

The spelling of 1311013131 in words is "one billion, three hundred eleven million, thirteen thousand, one hundred thirty-one".