1331868332356 has 9 divisors (see below), whose sum is σ = 2330773620861. Its totient is φ = 665933012112.

The previous prime is 1331868332309. The next prime is 1331868332359. The reversal of 1331868332356 is 6532338681331.

The square root of 1331868332356 is 1154066.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 978575992900 + 353292339456 = 989230^2 + 594384^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331868332359) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2019616 + ... + 2596648.

Almost surely, 2^{1331868332356} is an apocalyptic number.

1331868332356 is the 1154066-th square number.

It is an amenable number.

1331868332356 is a deficient number, since it is larger than the sum of its proper divisors (998905288505).

1331868332356 is an frugal number, since it uses more digits than its factorization.

1331868332356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154070 (or 577035 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 52.

The spelling of 1331868332356 in words is "one trillion, three hundred thirty-one billion, eight hundred sixty-eight million, three hundred thirty-two thousand, three hundred fifty-six".