21341034 has 48 divisors (see below), whose sum is σ = 54329184. Its totient is φ = 5968800.

The previous prime is 21341017. The next prime is 21341053. The reversal of 21341034 is 43014312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21340998 and 21341016.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1572 + ... + 6719.

It is an arithmetic number, because the mean of its divisors is an integer number (1131858).

Almost surely, 2^21341034 is an apocalyptic number.

21341034 is an abundant number, since it is smaller than the sum of its proper divisors (32988150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21341034 is a wasteful number, since it uses less digits than its factorization.

21341034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8323 (or 8320 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 21341034 is about 4619.6356999227. The cubic root of 21341034 is about 277.3778766261.

Adding to 21341034 its reverse (43014312), we get a palindrome (64355346).

It can be divided in two parts, 213410 and 34, that added together give a square (213444 = 462²).

The spelling of 21341034 in words is "twenty-one million, three hundred forty-one thousand, thirty-four".