4000103131021 has 8 divisors (see below), whose sum is σ = 4110250897400. Its totient is φ = 3890062568448.

The previous prime is 4000103131019. The next prime is 4000103131061. The reversal of 4000103131021 is 1201313010004.

It can be written as a sum of positive squares in 4 ways, for example, as 1573795340100 + 2426307790921 = 1254510^2 + 1557661^2 .

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 4000103131021 - 2¹ = 4000103131019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4000103130986 and 4000103131004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000103131061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26725296 + ... + 26874553.

It is an arithmetic number, because the mean of its divisors is an integer number (513781362175).

Almost surely, 2^{4000103131021} is an apocalyptic number.

It is an amenable number.

4000103131021 is a deficient number, since it is larger than the sum of its proper divisors (110147766379).

4000103131021 is a wasteful number, since it uses less digits than its factorization.

4000103131021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53601903.

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

Adding to 4000103131021 its reverse (1201313010004), we get a palindrome (5201416141025).

The spelling of 4000103131021 in words is "four trillion, one hundred three million, one hundred thirty-one thousand, twenty-one".