103131331021 has 8 divisors (see below), whose sum is σ = 105691370400. Its totient is φ = 100578638832.

The previous prime is 103131331019. The next prime is 103131331129. The reversal of 103131331021 is 120133131301.

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

It is a cyclic number.

It is not a de Polignac number, because 103131331021 - 2¹ = 103131331019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103131331021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103131331921) 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 7 ways as a sum of consecutive naturals, for example, 1808371 + ... + 1864528.

It is an arithmetic number, because the mean of its divisors is an integer number (13211421300).

Almost surely, 2^103131331021 is an apocalyptic number.

It is an amenable number.

103131331021 is a deficient number, since it is larger than the sum of its proper divisors (2560039379).

103131331021 is an equidigital number, since it uses as much as digits as its factorization.

103131331021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673595.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 103131331021 its reverse (120133131301), we get a palindrome (223264462322).

The spelling of 103131331021 in words is "one hundred three billion, one hundred thirty-one million, three hundred thirty-one thousand, twenty-one".