100343997 has 24 divisors (see below), whose sum is σ = 164309600. Its totient is φ = 58498848.

The previous prime is 100343927. The next prime is 100344007. The reversal of 100343997 is 799343001.

It is not a de Polignac number, because 100343997 - 2¹⁵ = 100311229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100343927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20347 + ... + 24792.

Almost surely, 2^100343997 is an apocalyptic number.

It is an amenable number.

100343997 is a deficient number, since it is larger than the sum of its proper divisors (63965603).

100343997 is a wasteful number, since it uses less digits than its factorization.

100343997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45177 (or 45174 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 100343997 is about 10017.1850836450. The cubic root of 100343997 is about 464.6905051168.

Adding to 100343997 its reverse (799343001), we get a palindrome (899686998).

The spelling of 100343997 in words is "one hundred million, three hundred forty-three thousand, nine hundred ninety-seven".