100448531 has 2 divisors, whose sum is σ = 100448532. Its totient is φ = 100448530.

The previous prime is 100448441. The next prime is 100448533. The reversal of 100448531 is 135844001.

It is a strong prime.

It is an emirp because it is prime and its reverse (135844001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100448531 is a prime.

It is a super-2 number, since 2×100448531² = 20179814760115922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 100448533, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100448531.

It is not a weakly prime, because it can be changed into another prime (100448533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50224265 + 50224266.

It is an arithmetic number, because the mean of its divisors is an integer number (50224266).

Almost surely, 2^100448531 is an apocalyptic number.

100448531 is a deficient number, since it is larger than the sum of its proper divisors (1).

100448531 is an equidigital number, since it uses as much as digits as its factorization.

100448531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 100448531 is about 10022.4014587323. The cubic root of 100448531 is about 464.8518138826.

The spelling of 100448531 in words is "one hundred million, four hundred forty-eight thousand, five hundred thirty-one".