131541436 has 12 divisors (see below), whose sum is σ = 247905112. Its totient is φ = 60711408.

The previous prime is 131541433. The next prime is 131541451. The reversal of 131541436 is 634145131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131541433) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1264770 + ... + 1264873.

Almost surely, 2^131541436 is an apocalyptic number.

It is an amenable number.

131541436 is a deficient number, since it is larger than the sum of its proper divisors (116363676).

131541436 is a wasteful number, since it uses less digits than its factorization.

131541436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529660 (or 2529658 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 131541436 is about 11469.1514943347. The cubic root of 131541436 is about 508.5740457269.

Adding to 131541436 its reverse (634145131), we get a palindrome (765686567).

The spelling of 131541436 in words is "one hundred thirty-one million, five hundred forty-one thousand, four hundred thirty-six".