1311235134045 has 8 divisors (see below), whose sum is σ = 2097976214496. Its totient is φ = 699325404816.

The previous prime is 1311235133977. The next prime is 1311235134049. The reversal of 1311235134045 is 5404315321131.

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

It is not a de Polignac number, because 1311235134045 - 2²⁴ = 1311218356829 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1311235133997 and 1311235134015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311235134049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43707837787 + ... + 43707837816.

It is an arithmetic number, because the mean of its divisors is an integer number (262247026812).

Almost surely, 2^{1311235134045} is an apocalyptic number.

1311235134045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1311235134045 is a deficient number, since it is larger than the sum of its proper divisors (786741080451).

1311235134045 is an equidigital number, since it uses as much as digits as its factorization.

1311235134045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87415675611.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 1311235134045 in words is "one trillion, three hundred eleven billion, two hundred thirty-five million, one hundred thirty-four thousand, forty-five".