1001231055 has 48 divisors (see below), whose sum is σ = 1975574016. Its totient is φ = 464333760.

The previous prime is 1001231053. The next prime is 1001231059. The reversal of 1001231055 is 5501321001.

It is not a de Polignac number, because 1001231055 - 2¹ = 1001231053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001231053) 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 47 ways as a sum of consecutive naturals, for example, 32587 + ... + 55356.

It is an arithmetic number, because the mean of its divisors is an integer number (41157792).

Almost surely, 2^1001231055 is an apocalyptic number.

1001231055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1001231055 is a deficient number, since it is larger than the sum of its proper divisors (974342961).

1001231055 is a wasteful number, since it uses less digits than its factorization.

1001231055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87988 (or 87985 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 1001231055 is about 31642.2353034674. The cubic root of 1001231055 is about 1000.4101833932.

Adding to 1001231055 its reverse (5501321001), we get a palindrome (6502552056).

The spelling of 1001231055 in words is "one billion, one million, two hundred thirty-one thousand, fifty-five".