103130331021 has 24 divisors (see below), whose sum is σ = 156869207040. Its totient is φ = 65108836800.

The previous prime is 103130330999. The next prime is 103130331103. The reversal of 103130331021 is 120133031301.

It is a happy number.

103130331021 is a `hidden beast` number, since 1 + 0 + 31 + 303 + 310 + 21 = 666.

It is not a de Polignac number, because 103130331021 - 2⁷ = 103130330893 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 103130330985 and 103130331003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103130331121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 311476 + ... + 550706.

It is an arithmetic number, because the mean of its divisors is an integer number (6536216960).

Almost surely, 2^103130331021 is an apocalyptic number.

It is an amenable number.

103130331021 is a deficient number, since it is larger than the sum of its proper divisors (53738876019).

103130331021 is a wasteful number, since it uses less digits than its factorization.

103130331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241777 (or 241774 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 103130331021 its reverse (120133031301), we get a palindrome (223263362322).

The spelling of 103130331021 in words is "one hundred three billion, one hundred thirty million, three hundred thirty-one thousand, twenty-one".