131541534 has 12 divisors (see below), whose sum is σ = 285006696. Its totient is φ = 43847172.

The previous prime is 131541499. The next prime is 131541589. The reversal of 131541534 is 435145131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131541498 and 131541507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3653914 + ... + 3653949.

It is an arithmetic number, because the mean of its divisors is an integer number (23750558).

Almost surely, 2^131541534 is an apocalyptic number.

131541534 is an abundant number, since it is smaller than the sum of its proper divisors (153465162).

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

131541534 is a wasteful number, since it uses less digits than its factorization.

131541534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7307871 (or 7307868 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 131541534 is about 11469.1557666639. The cubic root of 131541534 is about 508.5741720249.

Adding to 131541534 its reverse (435145131), we get a palindrome (566686665).

It can be divided in two parts, 1315 and 41534, that added together give a square (42849 = 207²).

The spelling of 131541534 in words is "one hundred thirty-one million, five hundred forty-one thousand, five hundred thirty-four".