1311640233452 has 6 divisors (see below), whose sum is σ = 2295370408548. Its totient is φ = 655820116724.

The previous prime is 1311640233427. The next prime is 1311640233499. The reversal of 1311640233452 is 2543320461131.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163955029178 + ... + 163955029185.

It is an arithmetic number, because the mean of its divisors is an integer number (382561734758).

Almost surely, 2^{1311640233452} is an apocalyptic number.

It is an amenable number.

1311640233452 is a deficient number, since it is larger than the sum of its proper divisors (983730175096).

1311640233452 is a wasteful number, since it uses less digits than its factorization.

1311640233452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327910058367 (or 327910058365 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 1311640233452 its reverse (2543320461131), we get a palindrome (3854960694583).

The spelling of 1311640233452 in words is "one trillion, three hundred eleven billion, six hundred forty million, two hundred thirty-three thousand, four hundred fifty-two".