131423131401044 has 96 divisors (see below), whose sum is σ = 268699781661696. Its totient is φ = 55077198359040.

The previous prime is 131423131401041. The next prime is 131423131401101. The reversal of 131423131401044 is 440104131324131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 131423131401044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131423131401041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 725150582 + ... + 725331794.

It is an arithmetic number, because the mean of its divisors is an integer number (2798956058976).

Almost surely, 2^{131423131401044} is an apocalyptic number.

131423131401044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131423131401044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134349890830848).

131423131401044 is an abundant number, since it is smaller than the sum of its proper divisors (137276650260652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131423131401044 is a wasteful number, since it uses less digits than its factorization.

131423131401044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182905 (or 182903 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 131423131401044 its reverse (440104131324131), we get a palindrome (571527262725175).

The spelling of 131423131401044 in words is "one hundred thirty-one trillion, four hundred twenty-three billion, one hundred thirty-one million, four hundred one thousand, forty-four".