21341097 has 16 divisors (see below), whose sum is σ = 31812480. Its totient is φ = 14139216.

The previous prime is 21341093. The next prime is 21341141. The reversal of 21341097 is 79014312.

It is not a de Polignac number, because 21341097 - 2² = 21341093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 21341097.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21341093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2143 + ... + 6875.

It is an arithmetic number, because the mean of its divisors is an integer number (1988280).

Almost surely, 2^21341097 is an apocalyptic number.

21341097 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

21341097 is a deficient number, since it is larger than the sum of its proper divisors (10471383).

21341097 is a wasteful number, since it uses less digits than its factorization.

21341097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4909 (or 4903 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 21341097 is about 4619.6425186371. The cubic root of 21341097 is about 277.3781495712.

The spelling of 21341097 in words is "twenty-one million, three hundred forty-one thousand, ninety-seven".