1172871213 has 8 divisors (see below), whose sum is σ = 1567956000. Its totient is φ = 779850288.

The previous prime is 1172871181. The next prime is 1172871221. The reversal of 1172871213 is 3121782711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1172871213 - 2⁵ = 1172871181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172871253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514638 + ... + 516911.

It is an arithmetic number, because the mean of its divisors is an integer number (195994500).

Almost surely, 2^1172871213 is an apocalyptic number.

It is an amenable number.

1172871213 is a deficient number, since it is larger than the sum of its proper divisors (395084787).

1172871213 is a wasteful number, since it uses less digits than its factorization.

1172871213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031931.

The product of its digits is 4704, while the sum is 33.

The square root of 1172871213 is about 34247.2073752007. The cubic root of 1172871213 is about 1054.5894985079.

The spelling of 1172871213 in words is "one billion, one hundred seventy-two million, eight hundred seventy-one thousand, two hundred thirteen".