1002011232131 has 24 divisors (see below), whose sum is σ = 1256601541104. Its totient is φ = 791957113920.

The previous prime is 1002011232127. The next prime is 1002011232143. The reversal of 1002011232131 is 1312321102001.

It is not a de Polignac number, because 1002011232131 - 2² = 1002011232127 is a prime.

It is a super-2 number, since 2×1002011232131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1002011232731) 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 23 ways as a sum of consecutive naturals, for example, 236405 + ... + 1435238.

It is an arithmetic number, because the mean of its divisors is an integer number (52358397546).

Almost surely, 2^{1002011232131} is an apocalyptic number.

1002011232131 is a deficient number, since it is larger than the sum of its proper divisors (254590308973).

1002011232131 is a wasteful number, since it uses less digits than its factorization.

1002011232131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672611 (or 1672604 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1002011232131 its reverse (1312321102001), we get a palindrome (2314332334132).

The spelling of 1002011232131 in words is "one trillion, two billion, eleven million, two hundred thirty-two thousand, one hundred thirty-one".