100720351 has 2 divisors, whose sum is σ = 100720352. Its totient is φ = 100720350.

The previous prime is 100720343. The next prime is 100720357. The reversal of 100720351 is 153027001.

It is a strong prime.

It is an emirp because it is prime and its reverse (153027001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100720351 - 2³ = 100720343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100720357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50360175 + 50360176.

It is an arithmetic number, because the mean of its divisors is an integer number (50360176).

Almost surely, 2^100720351 is an apocalyptic number.

100720351 is a deficient number, since it is larger than the sum of its proper divisors (1).

100720351 is an equidigital number, since it uses as much as digits as its factorization.

100720351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 100720351 is about 10035.9529193794. The cubic root of 100720351 is about 465.2707422434.

Adding to 100720351 its reverse (153027001), we get a palindrome (253747352).

The spelling of 100720351 in words is "one hundred million, seven hundred twenty thousand, three hundred fifty-one".