1311045131542 has 4 divisors (see below), whose sum is σ = 1966567697316. Its totient is φ = 655522565770.

The previous prime is 1311045131503. The next prime is 1311045131551. The reversal of 1311045131542 is 2451315401131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327761282884 + ... + 327761282887.

It is an arithmetic number, because the mean of its divisors is an integer number (491641924329).

Almost surely, 2^{1311045131542} is an apocalyptic number.

1311045131542 is a deficient number, since it is larger than the sum of its proper divisors (655522565774).

1311045131542 is an equidigital number, since it uses as much as digits as its factorization.

1311045131542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655522565773.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 1311045131542 in words is "one trillion, three hundred eleven billion, forty-five million, one hundred thirty-one thousand, five hundred forty-two".