131312220504430 has 64 divisors (see below), whose sum is σ = 270452096778240. Its totient is φ = 44967341952000.

The previous prime is 131312220504401. The next prime is 131312220504431. The reversal of 131312220504430 is 34405022213131.

It is a junction number, because it is equal to n+sod(n) for n = 131312220504392 and 131312220504401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131312220504431) 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, 244745401 + ... + 245281339.

It is an arithmetic number, because the mean of its divisors is an integer number (4225814012160).

Almost surely, 2^{131312220504430} is an apocalyptic number.

131312220504430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131312220504430 is an abundant number, since it is smaller than the sum of its proper divisors (139139876273810).

131312220504430 is a wasteful number, since it uses less digits than its factorization.

131312220504430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540145.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 131312220504430 its reverse (34405022213131), we get a palindrome (165717242717561).

The spelling of 131312220504430 in words is "one hundred thirty-one trillion, three hundred twelve billion, two hundred twenty million, five hundred four thousand, four hundred thirty".