131540454 has 12 divisors (see below), whose sum is σ = 285004356. Its totient is φ = 43846812.

The previous prime is 131540449. The next prime is 131540467. The reversal of 131540454 is 454045131.

It is a happy number.

It is a super-2 number, since 2×131540454² = 34605782077052232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3653884 + ... + 3653919.

It is an arithmetic number, because the mean of its divisors is an integer number (23750363).

Almost surely, 2^131540454 is an apocalyptic number.

131540454 is an abundant number, since it is smaller than the sum of its proper divisors (153463902).

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

131540454 is a wasteful number, since it uses less digits than its factorization.

131540454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7307811 (or 7307808 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 131540454 is about 11469.1086837644. The cubic root of 131540454 is about 508.5727801664.

Adding to 131540454 its reverse (454045131), we get a palindrome (585585585).

The spelling of 131540454 in words is "one hundred thirty-one million, five hundred forty thousand, four hundred fifty-four".