1131390501787 has 32 divisors (see below), whose sum is σ = 1395309655040. Its totient is φ = 893349336960.

The previous prime is 1131390501757. The next prime is 1131390501811. The reversal of 1131390501787 is 7871050931311.

It is a cyclic number.

It is not a de Polignac number, because 1131390501787 - 2²³ = 1131382113179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131390501757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103421764 + ... + 103432702.

It is an arithmetic number, because the mean of its divisors is an integer number (43603426720).

Almost surely, 2^{1131390501787} is an apocalyptic number.

1131390501787 is a deficient number, since it is larger than the sum of its proper divisors (263919153253).

1131390501787 is a wasteful number, since it uses less digits than its factorization.

1131390501787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13163.

The product of its (nonzero) digits is 158760, while the sum is 46.

The spelling of 1131390501787 in words is "one trillion, one hundred thirty-one billion, three hundred ninety million, five hundred one thousand, seven hundred eighty-seven".