131120230540545 has 32 divisors (see below), whose sum is σ = 233103105152640. Its totient is φ = 69930647697600.

The previous prime is 131120230540517. The next prime is 131120230540561. The reversal of 131120230540545 is 545045032021131.

131120230540545 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 202 + 3 + 0 + 5 + 405 + 45 = 666.

It is not a de Polignac number, because 131120230540545 - 2⁸ = 131120230540289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131108895 + ... + 132105195.

It is an arithmetic number, because the mean of its divisors is an integer number (7284472036020).

Almost surely, 2^{131120230540545} is an apocalyptic number.

131120230540545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131120230540545 is a deficient number, since it is larger than the sum of its proper divisors (101982874612095).

131120230540545 is an equidigital number, since it uses as much as digits as its factorization.

131120230540545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971182 (or 1971176 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 131120230540545 its reverse (545045032021131), we get a palindrome (676165262561676).

The spelling of 131120230540545 in words is "one hundred thirty-one trillion, one hundred twenty billion, two hundred thirty million, five hundred forty thousand, five hundred forty-five".