131201142023421 has 8 divisors (see below), whose sum is σ = 194372062256960. Its totient is φ = 87467428015596.

The previous prime is 131201142023381. The next prime is 131201142023459. The reversal of 131201142023421 is 124320241102131.

131201142023421 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 0 + 1 + 1 + 420 + 234 + 2 + 1 = 666.

It is not a de Polignac number, because 131201142023421 - 2¹⁷ = 131201141892349 is a prime.

It is a super-2 number, since 2×131201142023421² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4859301556423 = 131201142023421 / (1 + 3 + 1 + 2 + 0 + 1 + 1 + 4 + 2 + 0 + 2 + 3 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201142023921) 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, 2429650778185 + ... + 2429650778238.

It is an arithmetic number, because the mean of its divisors is an integer number (24296507782120).

Almost surely, 2^{131201142023421} is an apocalyptic number.

It is an amenable number.

131201142023421 is a deficient number, since it is larger than the sum of its proper divisors (63170920233539).

131201142023421 is an equidigital number, since it uses as much as digits as its factorization.

131201142023421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4859301556432 (or 4859301556426 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 131201142023421 its reverse (124320241102131), we get a palindrome (255521383125552).

The spelling of 131201142023421 in words is "one hundred thirty-one trillion, two hundred one billion, one hundred forty-two million, twenty-three thousand, four hundred twenty-one".