1216371 has 8 divisors (see below), whose sum is σ = 1746640. Its totient is φ = 748512.

The previous prime is 1216351. The next prime is 1216373. The reversal of 1216371 is 1736121.

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

It is not a de Polignac number, because 1216371 - 2⁵ = 1216339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1216373) 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, 15556 + ... + 15633.

It is an arithmetic number, because the mean of its divisors is an integer number (218330).

2^1216371 is an apocalyptic number.

1216371 is a deficient number, since it is larger than the sum of its proper divisors (530269).

1216371 is a wasteful number, since it uses less digits than its factorization.

1216371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31205.

The product of its digits is 252, while the sum is 21.

The square root of 1216371 is about 1102.8921071438. The cubic root of 1216371 is about 106.7469198562.

The spelling of 1216371 in words is "one million, two hundred sixteen thousand, three hundred seventy-one".