1011320171 has 4 divisors (see below), whose sum is σ = 1021333344. Its totient is φ = 1001307000.

The previous prime is 1011320117. The next prime is 1011320179. The reversal of 1011320171 is 1710231101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011320171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011320179) 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, 5006435 + ... + 5006636.

It is an arithmetic number, because the mean of its divisors is an integer number (255333336).

Almost surely, 2^1011320171 is an apocalyptic number.

1011320171 is a deficient number, since it is larger than the sum of its proper divisors (10013173).

1011320171 is a wasteful number, since it uses less digits than its factorization.

1011320171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10013172.

The product of its (nonzero) digits is 42, while the sum is 17.

The square root of 1011320171 is about 31801.2605253314. The cubic root of 1011320171 is about 1003.7592407340.

Adding to 1011320171 its reverse (1710231101), we get a palindrome (2721551272).

The spelling of 1011320171 in words is "one billion, eleven million, three hundred twenty thousand, one hundred seventy-one".