1211450317 has 16 divisors (see below), whose sum is σ = 1589875200. Its totient is φ = 894302640.

The previous prime is 1211450299. The next prime is 1211450327. The reversal of 1211450317 is 7130541121.

It is not a de Polignac number, because 1211450317 - 2²⁷ = 1077232589 is a prime.

It is a super-3 number, since 3×1211450317³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211450291 and 1211450300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211450327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412567 + ... + 415492.

It is an arithmetic number, because the mean of its divisors is an integer number (99367200).

Almost surely, 2^1211450317 is an apocalyptic number.

It is an amenable number.

1211450317 is a deficient number, since it is larger than the sum of its proper divisors (378424883).

1211450317 is a wasteful number, since it uses less digits than its factorization.

1211450317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828096.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1211450317 is about 34805.8948599228. The cubic root of 1211450317 is about 1066.0278136212.

Adding to 1211450317 its reverse (7130541121), we get a palindrome (8341991438).

The spelling of 1211450317 in words is "one billion, two hundred eleven million, four hundred fifty thousand, three hundred seventeen".