1311130643026 has 8 divisors (see below), whose sum is σ = 1966701380364. Its totient is φ = 655563516240.

The previous prime is 1311130643003. The next prime is 1311130643027. The reversal of 1311130643026 is 6203460311131.

It can be written as a sum of positive squares in 2 ways, for example, as 1260228514801 + 50902128225 = 1122599^2 + 225615^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×1311130643026³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311130643027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356496 + ... + 1658116.

Almost surely, 2^{1311130643026} is an apocalyptic number.

1311130643026 is a deficient number, since it is larger than the sum of its proper divisors (655570737338).

1311130643026 is a wasteful number, since it uses less digits than its factorization.

1311130643026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805276.

The product of its (nonzero) digits is 7776, while the sum is 31.

Adding to 1311130643026 its reverse (6203460311131), we get a palindrome (7514590954157).

The spelling of 1311130643026 in words is "one trillion, three hundred eleven billion, one hundred thirty million, six hundred forty-three thousand, twenty-six".