1721323034 has 4 divisors (see below), whose sum is σ = 2581984554. Its totient is φ = 860661516.

The previous prime is 1721323033. The next prime is 1721323057. The reversal of 1721323034 is 4303231271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1644708025 + 76615009 = 40555^2 + 8753^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1721322994 and 1721323012.

It is not an unprimeable number, because it can be changed into a prime (1721323033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430330757 + ... + 430330760.

Almost surely, 2^1721323034 is an apocalyptic number.

1721323034 is a deficient number, since it is larger than the sum of its proper divisors (860661520).

1721323034 is an equidigital number, since it uses as much as digits as its factorization.

1721323034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860661519.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 1721323034 is about 41488.8302317624. The cubic root of 1721323034 is about 1198.4524110168.

The spelling of 1721323034 in words is "one billion, seven hundred twenty-one million, three hundred twenty-three thousand, thirty-four".