131541445 has 16 divisors (see below), whose sum is σ = 180759168. Its totient is φ = 90020160.

The previous prime is 131541433. The next prime is 131541451. The reversal of 131541445 is 544145131.

It is not a de Polignac number, because 131541445 - 2⁷ = 131541317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15462 + ... + 22408.

It is an arithmetic number, because the mean of its divisors is an integer number (11297448).

Almost surely, 2^131541445 is an apocalyptic number.

It is an amenable number.

131541445 is a deficient number, since it is larger than the sum of its proper divisors (49217723).

131541445 is an equidigital number, since it uses as much as digits as its factorization.

131541445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7500.

The product of its digits is 4800, while the sum is 28.

The square root of 131541445 is about 11469.1518866915. The cubic root of 131541445 is about 508.5740573257.

Adding to 131541445 its reverse (544145131), we get a palindrome (675686576).

The spelling of 131541445 in words is "one hundred thirty-one million, five hundred forty-one thousand, four hundred forty-five".