131201122431 has 8 divisors (see below), whose sum is σ = 174941724160. Its totient is φ = 87463967832.

The previous prime is 131201122387. The next prime is 131201122433. The reversal of 131201122431 is 134221102131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131201122431 - 2¹⁰ = 131201121407 is a prime.

It is a super-2 number, since 2×131201122431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131201122398 and 131201122407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131201122433) 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, 771625 + ... + 926178.

It is an arithmetic number, because the mean of its divisors is an integer number (21867715520).

Almost surely, 2^131201122431 is an apocalyptic number.

131201122431 is a deficient number, since it is larger than the sum of its proper divisors (43740601729).

131201122431 is a wasteful number, since it uses less digits than its factorization.

131201122431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723565.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 131201122431 its reverse (134221102131), we get a palindrome (265422224562).

The spelling of 131201122431 in words is "one hundred thirty-one billion, two hundred one million, one hundred twenty-two thousand, four hundred thirty-one".