1001231143245 has 64 divisors (see below), whose sum is σ = 1789104430080. Its totient is φ = 531250574400.

The previous prime is 1001231143229. The next prime is 1001231143247. The reversal of 1001231143245 is 5423411321001.

1001231143245 is a `hidden beast` number, since 10 + 0 + 12 + 311 + 4 + 324 + 5 = 666.

It is not a de Polignac number, because 1001231143245 - 2⁴ = 1001231143229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001231143247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 96017722 + ... + 96028148.

It is an arithmetic number, because the mean of its divisors is an integer number (27954756720).

Almost surely, 2^{1001231143245} is an apocalyptic number.

1001231143245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1001231143245 is a deficient number, since it is larger than the sum of its proper divisors (787873286835).

1001231143245 is a wasteful number, since it uses less digits than its factorization.

1001231143245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14023 (or 14017 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 1001231143245 its reverse (5423411321001), we get a palindrome (6424642464246).

The spelling of 1001231143245 in words is "one trillion, one billion, two hundred thirty-one million, one hundred forty-three thousand, two hundred forty-five".