103581011 has 4 divisors (see below), whose sum is σ = 107152800. Its totient is φ = 100009224.

The previous prime is 103581007. The next prime is 103581031. The reversal of 103581011 is 110185301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110185301 = 3923 ⋅28087.

It is a cyclic number.

It is not a de Polignac number, because 103581011 - 2² = 103581007 is a prime.

It is a super-3 number, since 3×103581011³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103581001) 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, 1785851 + ... + 1785908.

It is an arithmetic number, because the mean of its divisors is an integer number (26788200).

Almost surely, 2^103581011 is an apocalyptic number.

103581011 is a deficient number, since it is larger than the sum of its proper divisors (3571789).

103581011 is an equidigital number, since it uses as much as digits as its factorization.

103581011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571788.

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 103581011 is about 10177.4756693396. The cubic root of 103581011 is about 469.6345597527.

The spelling of 103581011 in words is "one hundred three million, five hundred eighty-one thousand, eleven".