131440434547 has 16 divisors (see below), whose sum is σ = 134608158720. Its totient is φ = 128298953952.

The previous prime is 131440434529. The next prime is 131440434583. The reversal of 131440434547 is 745434044131.

It is a cyclic number.

It is not a de Polignac number, because 131440434547 - 2²³ = 131432045939 is a prime.

It is a super-3 number, since 3×131440434547³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131440434347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26460258 + ... + 26465224.

It is an arithmetic number, because the mean of its divisors is an integer number (8413009920).

Almost surely, 2^131440434547 is an apocalyptic number.

131440434547 is a deficient number, since it is larger than the sum of its proper divisors (3167724173).

131440434547 is a wasteful number, since it uses less digits than its factorization.

131440434547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7482.

The product of its (nonzero) digits is 322560, while the sum is 40.

Adding to 131440434547 its reverse (745434044131), we get a palindrome (876874478678).

The spelling of 131440434547 in words is "one hundred thirty-one billion, four hundred forty million, four hundred thirty-four thousand, five hundred forty-seven".