131403234121201 has 4 divisors (see below), whose sum is σ = 150175124709952. Its totient is φ = 112631343532452.

The previous prime is 131403234121177. The next prime is 131403234121219. The reversal of 131403234121201 is 102121432304131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131403234121201 - 2⁹ = 131403234120689 is a prime.

It is a super-2 number, since 2×131403234121201² (a number of 29 digits) contains 22 as substring.

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 131403234121201.

It is not an unprimeable number, because it can be changed into a prime (131403234121801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9385945294365 + ... + 9385945294378.

It is an arithmetic number, because the mean of its divisors is an integer number (37543781177488).

Almost surely, 2^{131403234121201} is an apocalyptic number.

It is an amenable number.

131403234121201 is a deficient number, since it is larger than the sum of its proper divisors (18771890588751).

131403234121201 is an equidigital number, since it uses as much as digits as its factorization.

131403234121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18771890588750.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 131403234121201 its reverse (102121432304131), we get a palindrome (233524666425332).

The spelling of 131403234121201 in words is "one hundred thirty-one trillion, four hundred three billion, two hundred thirty-four million, one hundred twenty-one thousand, two hundred one".