131432305545 has 24 divisors (see below), whose sum is σ = 229454971200. Its totient is φ = 69592929696.

The previous prime is 131432305483. The next prime is 131432305559. The reversal of 131432305545 is 545503234131.

131432305545 is a `hidden beast` number, since 1 + 31 + 43 + 2 + 30 + 554 + 5 = 666.

It is not a de Polignac number, because 131432305545 - 2⁶ = 131432305481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10499925 + ... + 10512434.

It is an arithmetic number, because the mean of its divisors is an integer number (9560623800).

Almost surely, 2^131432305545 is an apocalyptic number.

131432305545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131432305545 is a deficient number, since it is larger than the sum of its proper divisors (98022665655).

131432305545 is a wasteful number, since it uses less digits than its factorization.

131432305545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21012509 (or 21012506 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 131432305545 its reverse (545503234131), we get a palindrome (676935539676).

The spelling of 131432305545 in words is "one hundred thirty-one billion, four hundred thirty-two million, three hundred five thousand, five hundred forty-five".