131423433402231 has 8 divisors (see below), whose sum is σ = 194701382818160. Its totient is φ = 87615622268136.

The previous prime is 131423433402143. The next prime is 131423433402301. The reversal of 131423433402231 is 132204334324131.

131423433402231 is a `hidden beast` number, since 1 + 3 + 1 + 42 + 3 + 43 + 340 + 2 + 231 = 666.

It is not a de Polignac number, because 131423433402231 - 2¹¹ = 131423433400183 is a prime.

It is a super-2 number, since 2×131423433402231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131423433402631) 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, 2433767285200 + ... + 2433767285253.

It is an arithmetic number, because the mean of its divisors is an integer number (24337672852270).

Almost surely, 2^{131423433402231} is an apocalyptic number.

131423433402231 is a deficient number, since it is larger than the sum of its proper divisors (63277949415929).

131423433402231 is an equidigital number, since it uses as much as digits as its factorization.

131423433402231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4867534570462 (or 4867534570456 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

Adding to 131423433402231 its reverse (132204334324131), we get a palindrome (263627767726362).

The spelling of 131423433402231 in words is "one hundred thirty-one trillion, four hundred twenty-three billion, four hundred thirty-three million, four hundred two thousand, two hundred thirty-one".