131001402221431 has 12 divisors (see below), whose sum is σ = 152390383006608. Its totient is φ = 112286181743232.

The previous prime is 131001402221413. The next prime is 131001402221441. The reversal of 131001402221431 is 134122204100131.

It is not a de Polignac number, because 131001402221431 - 2¹¹ = 131001402219383 is a prime.

It is a super-2 number, since 2×131001402221431² (a number of 29 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 = 131001402221396 and 131001402221405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131001402221441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1108186 + ... + 16224391.

It is an arithmetic number, because the mean of its divisors is an integer number (12699198583884).

Almost surely, 2^{131001402221431} is an apocalyptic number.

131001402221431 is a deficient number, since it is larger than the sum of its proper divisors (21388980785177).

131001402221431 is a wasteful number, since it uses less digits than its factorization.

131001402221431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17486838 (or 17486831 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 131001402221431 its reverse (134122204100131), we get a palindrome (265123606321562).

The spelling of 131001402221431 in words is "one hundred thirty-one trillion, one billion, four hundred two million, two hundred twenty-one thousand, four hundred thirty-one".