131338534 has 12 divisors (see below), whose sum is σ = 199759716. Its totient is φ = 64764432.

The previous prime is 131338531. The next prime is 131338547. The reversal of 131338534 is 435833131.

It is a junction number, because it is equal to n+sod(n) for n = 131338496 and 131338505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131338531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4497 + ... + 16819.

It is an arithmetic number, because the mean of its divisors is an integer number (16646643).

Almost surely, 2^131338534 is an apocalyptic number.

131338534 is a deficient number, since it is larger than the sum of its proper divisors (68421182).

131338534 is an equidigital number, since it uses as much as digits as its factorization.

131338534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12471 (or 12398 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 131338534 is about 11460.3025265479. The cubic root of 131338534 is about 508.3124201973.

The spelling of 131338534 in words is "one hundred thirty-one million, three hundred thirty-eight thousand, five hundred thirty-four".