130440000031021 has 32 divisors (see below), whose sum is σ = 135621105269760. Its totient is φ = 125388358877184.

The previous prime is 130440000030997. The next prime is 130440000031069. The reversal of 130440000031021 is 120130000044031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130440000031021 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 130440000031021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130440000031091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 282773061 + ... + 283233973.

It is an arithmetic number, because the mean of its divisors is an integer number (4238159539680).

Almost surely, 2^{130440000031021} is an apocalyptic number.

It is an amenable number.

130440000031021 is a deficient number, since it is larger than the sum of its proper divisors (5181105238739).

130440000031021 is a wasteful number, since it uses less digits than its factorization.

130440000031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461565.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 130440000031021 its reverse (120130000044031), we get a palindrome (250570000075052).

The spelling of 130440000031021 in words is "one hundred thirty trillion, four hundred forty billion, thirty-one thousand, twenty-one".