100471531 has 2 divisors, whose sum is σ = 100471532. Its totient is φ = 100471530.

The previous prime is 100471529. The next prime is 100471543. The reversal of 100471531 is 135174001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100471531 - 2¹ = 100471529 is a prime.

It is a super-2 number, since 2×100471531² = 20189057082967922, which contains 22 as substring.

Together with 100471529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (100481531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50235765 + 50235766.

It is an arithmetic number, because the mean of its divisors is an integer number (50235766).

Almost surely, 2^100471531 is an apocalyptic number.

100471531 is a deficient number, since it is larger than the sum of its proper divisors (1).

100471531 is an equidigital number, since it uses as much as digits as its factorization.

100471531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 100471531 is about 10023.5488226476. The cubic root of 100471531 is about 464.8872906775.

The spelling of 100471531 in words is "one hundred million, four hundred seventy-one thousand, five hundred thirty-one".