131023130020021 has 8 divisors (see below), whose sum is σ = 135435720702464. Its totient is φ = 126622166718960.

The previous prime is 131023130019931. The next prime is 131023130020063. The reversal of 131023130020021 is 120020031320131.

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 131023130020021 - 2³¹ = 131020982536373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131023130024021) 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, 2906822430 + ... + 2906867503.

It is an arithmetic number, because the mean of its divisors is an integer number (16929465087808).

Almost surely, 2^{131023130020021} is an apocalyptic number.

It is an amenable number.

131023130020021 is a deficient number, since it is larger than the sum of its proper divisors (4412590682443).

131023130020021 is an equidigital number, since it uses as much as digits as its factorization.

131023130020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5813690691.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 131023130020021 its reverse (120020031320131), we get a palindrome (251043161340152).

The spelling of 131023130020021 in words is "one hundred thirty-one trillion, twenty-three billion, one hundred thirty million, twenty thousand, twenty-one".