1311461504431 has 4 divisors (see below), whose sum is σ = 1412343158632. Its totient is φ = 1210579850232.

The previous prime is 1311461504429. The next prime is 1311461504459. The reversal of 1311461504431 is 1344051641131.

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

It is a cyclic number.

It is not a de Polignac number, because 1311461504431 - 2¹ = 1311461504429 is a prime.

It is a super-2 number, since 2×1311461504431² (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 (1311461504491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50440827081 + ... + 50440827106.

It is an arithmetic number, because the mean of its divisors is an integer number (353085789658).

Almost surely, 2^{1311461504431} is an apocalyptic number.

1311461504431 is a deficient number, since it is larger than the sum of its proper divisors (100881654201).

1311461504431 is a wasteful number, since it uses less digits than its factorization.

1311461504431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100881654200.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 1311461504431 in words is "one trillion, three hundred eleven billion, four hundred sixty-one million, five hundred four thousand, four hundred thirty-one".