100351261 has 2 divisors, whose sum is σ = 100351262. Its totient is φ = 100351260.

The previous prime is 100351219. The next prime is 100351291. The reversal of 100351261 is 162153001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77968900 + 22382361 = 8830^2 + 4731^2 .

It is an emirp because it is prime and its reverse (162153001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100351261 - 2⁷ = 100351133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100351201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50175630 + 50175631.

It is an arithmetic number, because the mean of its divisors is an integer number (50175631).

Almost surely, 2^100351261 is an apocalyptic number.

It is an amenable number.

100351261 is a deficient number, since it is larger than the sum of its proper divisors (1).

100351261 is an equidigital number, since it uses as much as digits as its factorization.

100351261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 100351261 is about 10017.5476539920. The cubic root of 100351261 is about 464.7017179795.

The spelling of 100351261 in words is "one hundred million, three hundred fifty-one thousand, two hundred sixty-one".