1002131020123 has 8 divisors (see below), whose sum is σ = 1050447038256. Its totient is φ = 954951849600.

The previous prime is 1002131020103. The next prime is 1002131020127. The reversal of 1002131020123 is 3210201312001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002131020123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002131020097 and 1002131020106.

It is not an unprimeable number, because it can be changed into a prime (1002131020127) 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 7 ways as a sum of consecutive naturals, for example, 284210098 + ... + 284213623.

It is an arithmetic number, because the mean of its divisors is an integer number (131305879782).

Almost surely, 2^{1002131020123} is an apocalyptic number.

1002131020123 is a deficient number, since it is larger than the sum of its proper divisors (48316018133).

1002131020123 is an equidigital number, since it uses as much as digits as its factorization.

1002131020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568423805.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1002131020123 its reverse (3210201312001), we get a palindrome (4212332332124).

The spelling of 1002131020123 in words is "one trillion, two billion, one hundred thirty-one million, twenty thousand, one hundred twenty-three".