1331330144535 has 48 divisors (see below), whose sum is σ = 2331525721824. Its totient is φ = 702711668736.

The previous prime is 1331330144531. The next prime is 1331330144537. The reversal of 1331330144535 is 5354410331331.

It is a happy number.

1331330144535 is a `hidden beast` number, since 1 + 3 + 313 + 301 + 4 + 4 + 5 + 35 = 666.

It is not a de Polignac number, because 1331330144535 - 2² = 1331330144531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1331330144535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331330144531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3227692 + ... + 3616718.

It is an arithmetic number, because the mean of its divisors is an integer number (48573452538).

Almost surely, 2^{1331330144535} is an apocalyptic number.

1331330144535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1331330144535 is a deficient number, since it is larger than the sum of its proper divisors (1000195577289).

1331330144535 is a wasteful number, since it uses less digits than its factorization.

1331330144535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389824 (or 389821 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

Adding to 1331330144535 its reverse (5354410331331), we get a palindrome (6685740475866).

The spelling of 1331330144535 in words is "one trillion, three hundred thirty-one billion, three hundred thirty million, one hundred forty-four thousand, five hundred thirty-five".