100347081 has 4 divisors (see below), whose sum is σ = 133796112. Its totient is φ = 66898052.

The previous prime is 100347077. The next prime is 100347089. The reversal of 100347081 is 180743001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180743001 = 3 ⋅60247667.

It is a cyclic number.

It is not a de Polignac number, because 100347081 - 2² = 100347077 is a prime.

It is a super-2 number, since 2×100347081² = 20139073330441122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100347089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16724511 + ... + 16724516.

It is an arithmetic number, because the mean of its divisors is an integer number (33449028).

Almost surely, 2^100347081 is an apocalyptic number.

It is an amenable number.

100347081 is a deficient number, since it is larger than the sum of its proper divisors (33449031).

100347081 is an equidigital number, since it uses as much as digits as its factorization.

100347081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33449030.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 100347081 is about 10017.3390179229. The cubic root of 100347081 is about 464.6952657100.

It can be divided in two parts, 1003 and 47081, that added together give a palindrome (48084).

The spelling of 100347081 in words is "one hundred million, three hundred forty-seven thousand, eighty-one".