1311420450040 has 32 divisors (see below), whose sum is σ = 2955372291360. Its totient is φ = 523736841600.

The previous prime is 1311420450023. The next prime is 1311420450047. The reversal of 1311420450040 is 400540241131.

It is a super-2 number, since 2×1311420450040² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1311420449987 and 1311420450014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311420450047) 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, 25953771 + ... + 26004250.

It is an arithmetic number, because the mean of its divisors is an integer number (92355384105).

Almost surely, 2^{1311420450040} is an apocalyptic number.

1311420450040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311420450040 is an abundant number, since it is smaller than the sum of its proper divisors (1643951841320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311420450040 is a wasteful number, since it uses less digits than its factorization.

1311420450040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51958663 (or 51958659 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 1311420450040 its reverse (400540241131), we get a palindrome (1711960691171).

The spelling of 1311420450040 in words is "one trillion, three hundred eleven billion, four hundred twenty million, four hundred fifty thousand, forty".