1011002231131 has 4 divisors (see below), whose sum is σ = 1011010966000. Its totient is φ = 1010993496264.

The previous prime is 1011002231111. The next prime is 1011002231147. The reversal of 1011002231131 is 1311322001101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1011002231131 - 2⁹ = 1011002230619 is a prime.

It is a super-2 number, since 2×1011002231131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011002231111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4191456 + ... + 4426093.

It is an arithmetic number, because the mean of its divisors is an integer number (252752741500).

Almost surely, 2^{1011002231131} is an apocalyptic number.

1011002231131 is a deficient number, since it is larger than the sum of its proper divisors (8734869).

1011002231131 is an equidigital number, since it uses as much as digits as its factorization.

1011002231131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8734868.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1011002231131 its reverse (1311322001101), we get a palindrome (2322324232232).

The spelling of 1011002231131 in words is "one trillion, eleven billion, two million, two hundred thirty-one thousand, one hundred thirty-one".