100131994 has 8 divisors (see below), whose sum is σ = 150308820. Its totient is φ = 50029056.

The previous prime is 100131961. The next prime is 100132013. The reversal of 100131994 is 499131001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 66341025 + 33790969 = 8145^2 + 5813^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 14949 + ... + 20584.

Almost surely, 2^100131994 is an apocalyptic number.

100131994 is a deficient number, since it is larger than the sum of its proper divisors (50176826).

100131994 is a wasteful number, since it uses less digits than its factorization.

100131994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36944.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 100131994 is about 10006.5975236341. The cubic root of 100131994 is about 464.3630141996.

Adding to 100131994 its reverse (499131001), we get a palindrome (599262995).

The spelling of 100131994 in words is "one hundred million, one hundred thirty-one thousand, nine hundred ninety-four".