131220434023104 has 56 divisors (see below), whose sum is σ = 351088380402480. Its totient is φ = 43248682369024.

The previous prime is 131220434023103. The next prime is 131220434023121. The reversal of 131220434023104 is 401320434022131.

It is not an unprimeable number, because it can be changed into a prime (131220434023103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3839532129 + ... + 3839566304.

It is an arithmetic number, because the mean of its divisors is an integer number (6269435364330).

Almost surely, 2^{131220434023104} is an apocalyptic number.

It is an amenable number.

131220434023104 is an abundant number, since it is smaller than the sum of its proper divisors (219867946379376).

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

131220434023104 is an equidigital number, since it uses as much as digits as its factorization.

131220434023104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7679098537 (or 7679098527 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 131220434023104 its reverse (401320434022131), we get a palindrome (532540868045235).

The spelling of 131220434023104 in words is "one hundred thirty-one trillion, two hundred twenty billion, four hundred thirty-four million, twenty-three thousand, one hundred four".