1073771321 has 4 divisors (see below), whose sum is σ = 1227167232. Its totient is φ = 920375412.

The previous prime is 1073771311. The next prime is 1073771329. The reversal of 1073771321 is 1231773701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1073771321 - 2²⁶ = 1006662457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1073771329) 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, 76697945 + ... + 76697958.

It is an arithmetic number, because the mean of its divisors is an integer number (306791808).

Almost surely, 2^1073771321 is an apocalyptic number.

It is an amenable number.

1073771321 is a deficient number, since it is larger than the sum of its proper divisors (153395911).

1073771321 is an equidigital number, since it uses as much as digits as its factorization.

1073771321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153395910.

The product of its (nonzero) digits is 6174, while the sum is 32.

The square root of 1073771321 is about 32768.4500854099. The cubic root of 1073771321 is about 1024.0093767579.

The spelling of 1073771321 in words is "one billion, seventy-three million, seven hundred seventy-one thousand, three hundred twenty-one".