131131244323420 has 96 divisors (see below), whose sum is σ = 318568035070656. Its totient is φ = 44810413977600.

The previous prime is 131131244323379. The next prime is 131131244323421. The reversal of 131131244323420 is 24323442131131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131131244323421) 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, 24404511 + ... + 29288950.

It is an arithmetic number, because the mean of its divisors is an integer number (3318417031986).

Almost surely, 2^{131131244323420} is an apocalyptic number.

131131244323420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131131244323420 is an abundant number, since it is smaller than the sum of its proper divisors (187436790747236).

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

131131244323420 is a wasteful number, since it uses less digits than its factorization.

131131244323420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53694151 (or 53694149 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 131131244323420 its reverse (24323442131131), we get a palindrome (155454686454551).

The spelling of 131131244323420 in words is "one hundred thirty-one trillion, one hundred thirty-one billion, two hundred forty-four million, three hundred twenty-three thousand, four hundred twenty".