21411703 has 4 divisors (see below), whose sum is σ = 21705088. Its totient is φ = 21118320.

The previous prime is 21411701. The next prime is 21411707. The reversal of 21411703 is 30711412.

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 21411703 - 2¹ = 21411701 is a prime.

It is a super-2 number, since 2×21411703² = 916922050720418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21411701) 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, 146583 + ... + 146728.

It is an arithmetic number, because the mean of its divisors is an integer number (5426272).

Almost surely, 2^21411703 is an apocalyptic number.

21411703 is a deficient number, since it is larger than the sum of its proper divisors (293385).

21411703 is an equidigital number, since it uses as much as digits as its factorization.

21411703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293384.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 21411703 is about 4627.2781416293. The cubic root of 21411703 is about 277.6837102935.

It can be divided in two parts, 2141 and 1703, that added together give a square (3844 = 62²).

The spelling of 21411703 in words is "twenty-one million, four hundred eleven thousand, seven hundred three".