100263381 has 4 divisors (see below), whose sum is σ = 133684512. Its totient is φ = 66842252.

The previous prime is 100263367. The next prime is 100263389. The reversal of 100263381 is 183362001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 183362001 = 3 ⋅61120667.

It is a cyclic number.

It is not a de Polignac number, because 100263381 - 2¹³ = 100255189 is a prime.

It is a super-2 number, since 2×100263381² = 20105491139102322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100263389) 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, 16710561 + ... + 16710566.

It is an arithmetic number, because the mean of its divisors is an integer number (33421128).

Almost surely, 2^100263381 is an apocalyptic number.

It is an amenable number.

100263381 is a deficient number, since it is larger than the sum of its proper divisors (33421131).

100263381 is an equidigital number, since it uses as much as digits as its factorization.

100263381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33421130.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 100263381 is about 10013.1603902065. The cubic root of 100263381 is about 464.5660282257.

The spelling of 100263381 in words is "one hundred million, two hundred sixty-three thousand, three hundred eighty-one".