100131534 has 12 divisors (see below), whose sum is σ = 216951696. Its totient is φ = 33377172.

The previous prime is 100131533. The next prime is 100131557. The reversal of 100131534 is 435131001.

100131534 is a `hidden beast` number, since 1 + 0 + 0 + 131 + 534 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 5562863 = 100131534 / (1 + 0 + 0 + 1 + 3 + 1 + 5 + 3 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100131533) 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, 2781414 + ... + 2781449.

It is an arithmetic number, because the mean of its divisors is an integer number (18079308).

Almost surely, 2^100131534 is an apocalyptic number.

100131534 is an abundant number, since it is smaller than the sum of its proper divisors (116820162).

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

100131534 is a wasteful number, since it uses less digits than its factorization.

100131534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5562871 (or 5562868 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 100131534 is about 10006.5745387720. The cubic root of 100131534 is about 464.3623031138.

Adding to 100131534 its reverse (435131001), we get a palindrome (535262535).

The spelling of 100131534 in words is "one hundred million, one hundred thirty-one thousand, five hundred thirty-four".