100581423 has 4 divisors (see below), whose sum is σ = 134108568. Its totient is φ = 67054280.

The previous prime is 100581419. The next prime is 100581431. The reversal of 100581423 is 324185001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100581423 - 2² = 100581419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100581393 and 100581402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100581463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16763568 + ... + 16763573.

It is an arithmetic number, because the mean of its divisors is an integer number (33527142).

Almost surely, 2^100581423 is an apocalyptic number.

100581423 is a deficient number, since it is larger than the sum of its proper divisors (33527145).

100581423 is an equidigital number, since it uses as much as digits as its factorization.

100581423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33527144.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 100581423 is about 10029.0290158120. The cubic root of 100581423 is about 465.0567210263.

It can be divided in two parts, 1005 and 81423, that added together give a palindrome (82428).

The spelling of 100581423 in words is "one hundred million, five hundred eighty-one thousand, four hundred twenty-three".