1231352062664 has 8 divisors (see below), whose sum is σ = 2308785117510. Its totient is φ = 615676031328.

The previous prime is 1231352062639. The next prime is 1231352062771. The reversal of 1231352062664 is 4662602531321.

It can be written as a sum of positive squares in only one way, i.e., 1210532458564 + 20819604100 = 1100242^2 + 144290^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76959503909 + ... + 76959503924.

Almost surely, 2^{1231352062664} is an apocalyptic number.

It is an amenable number.

1231352062664 is a deficient number, since it is larger than the sum of its proper divisors (1077433054846).

1231352062664 is a wasteful number, since it uses less digits than its factorization.

1231352062664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153919007839 (or 153919007835 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 41.

Adding to 1231352062664 its reverse (4662602531321), we get a palindrome (5893954593985).

The spelling of 1231352062664 in words is "one trillion, two hundred thirty-one billion, three hundred fifty-two million, sixty-two thousand, six hundred sixty-four".