1311403124031 has 48 divisors (see below), whose sum is σ = 2360586159360. Its totient is φ = 628844636160.

The previous prime is 1311403123999. The next prime is 1311403124069. The reversal of 1311403124031 is 1304213041131.

It is a happy number.

It is not a de Polignac number, because 1311403124031 - 2⁵ = 1311403123999 is a prime.

It is a super-2 number, since 2×1311403124031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1311403123992 and 1311403124010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311403124071) 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, 16757026 + ... + 16835103.

It is an arithmetic number, because the mean of its divisors is an integer number (49178878320).

Almost surely, 2^{1311403124031} is an apocalyptic number.

1311403124031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1311403124031 is a deficient number, since it is larger than the sum of its proper divisors (1049183035329).

1311403124031 is a wasteful number, since it uses less digits than its factorization.

1311403124031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33592176 (or 33592163 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1311403124031 its reverse (1304213041131), we get a palindrome (2615616165162).

The spelling of 1311403124031 in words is "one trillion, three hundred eleven billion, four hundred three million, one hundred twenty-four thousand, thirty-one".