131201420144431 has 64 divisors (see below), whose sum is σ = 170150303232000. Its totient is φ = 98321702307840.

The previous prime is 131201420144419. The next prime is 131201420144513. The reversal of 131201420144431 is 134441024102131.

It is not a de Polignac number, because 131201420144431 - 2¹³ = 131201420136239 is a prime.

It is a super-2 number, since 2×131201420144431² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131201420144393 and 131201420144402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201420144401) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3570185445 + ... + 3570222193.

It is an arithmetic number, because the mean of its divisors is an integer number (2658598488000).

Almost surely, 2^{131201420144431} is an apocalyptic number.

131201420144431 is a deficient number, since it is larger than the sum of its proper divisors (38948883087569).

131201420144431 is a wasteful number, since it uses less digits than its factorization.

131201420144431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53456.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 131201420144431 its reverse (134441024102131), we get a palindrome (265642444246562).

The spelling of 131201420144431 in words is "one hundred thirty-one trillion, two hundred one billion, four hundred twenty million, one hundred forty-four thousand, four hundred thirty-one".