1311003001231 has 16 divisors (see below), whose sum is σ = 1645321747968. Its totient is φ = 1014795468000.

The previous prime is 1311003001229. The next prime is 1311003001267. The reversal of 1311003001231 is 1321003001131.

It is a cyclic number.

It is not a de Polignac number, because 1311003001231 - 2¹ = 1311003001229 is a prime.

It is a super-2 number, since 2×1311003001231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311003001331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56365900 + ... + 56389153.

It is an arithmetic number, because the mean of its divisors is an integer number (102832609248).

Almost surely, 2^{1311003001231} is an apocalyptic number.

1311003001231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1311003001231 is a deficient number, since it is larger than the sum of its proper divisors (334318746737).

1311003001231 is a wasteful number, since it uses less digits than its factorization.

1311003001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112755222.

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

Adding to 1311003001231 its reverse (1321003001131), we get a palindrome (2632006002362).

The spelling of 1311003001231 in words is "one trillion, three hundred eleven billion, three million, one thousand, two hundred thirty-one".