1311131001 has 48 divisors (see below), whose sum is σ = 1932880320. Its totient is φ = 787691520.

The previous prime is 1311130999. The next prime is 1311131033. The reversal of 1311131001 is 1001311131.

It is not a de Polignac number, because 1311131001 - 2¹ = 1311130999 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311131071) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6213786 + ... + 6213996.

It is an arithmetic number, because the mean of its divisors is an integer number (40268340).

Almost surely, 2^1311131001 is an apocalyptic number.

It is an amenable number.

1311131001 is a deficient number, since it is larger than the sum of its proper divisors (621749319).

1311131001 is a wasteful number, since it uses less digits than its factorization.

1311131001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 1311131001 is about 36209.5429548621. The cubic root of 1311131001 is about 1094.4989822367.

Adding to 1311131001 its reverse (1001311131), we get a palindrome (2312442132).

The spelling of 1311131001 in words is "one billion, three hundred eleven million, one hundred thirty-one thousand, one".