1311440430031 has 8 divisors (see below), whose sum is σ = 1382548045824. Its totient is φ = 1242133007160.

The previous prime is 1311440430011. The next prime is 1311440430061. The reversal of 1311440430031 is 1300340441131.

It is a happy number.

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 1311440430031 - 2⁷ = 1311440429903 is a prime.

It is a super-2 number, since 2×1311440430031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311440429978 and 1311440430005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311440430011) 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, 450046735 + ... + 450049648.

It is an arithmetic number, because the mean of its divisors is an integer number (172818505728).

Almost surely, 2^{1311440430031} is an apocalyptic number.

1311440430031 is a deficient number, since it is larger than the sum of its proper divisors (71107615793).

1311440430031 is an equidigital number, since it uses as much as digits as its factorization.

1311440430031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900096461.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1311440430031 its reverse (1300340441131), we get a palindrome (2611780871162).

It can be divided in two parts, 1311440 and 430031, that added together give a palindrome (1741471).

The spelling of 1311440430031 in words is "one trillion, three hundred eleven billion, four hundred forty million, four hundred thirty thousand, thirty-one".