1311001673408 has 84 divisors (see below), whose sum is σ = 3042977700672. Its totient is φ = 558753431040.

The previous prime is 1311001673407. The next prime is 1311001673431. The reversal of 1311001673408 is 8043761001131.

It is not an unprimeable number, because it can be changed into a prime (1311001673407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 587216 + ... + 1722447.

It is an arithmetic number, because the mean of its divisors is an integer number (36225925008).

Almost surely, 2^{1311001673408} is an apocalyptic number.

It is an amenable number.

1311001673408 is an abundant number, since it is smaller than the sum of its proper divisors (1731976027264).

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

1311001673408 is a wasteful number, since it uses less digits than its factorization.

1311001673408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309870 (or 2309853 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

Adding to 1311001673408 its reverse (8043761001131), we get a palindrome (9354762674539).

The spelling of 1311001673408 in words is "one trillion, three hundred eleven billion, one million, six hundred seventy-three thousand, four hundred eight".