1214331761 has 16 divisors (see below), whose sum is σ = 1267857360. Its totient is φ = 1161646080.

The previous prime is 1214331751. The next prime is 1214331791. The reversal of 1214331761 is 1671334121.

It can be written as a sum of positive squares in 8 ways, for example, as 256800625 + 957531136 = 16025^2 + 30944^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214331761 - 2¹⁰ = 1214330737 is a prime.

It is a super-2 number, since 2×1214331761² = 2949203251546722242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1214331731) 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, 2047481 + ... + 2048073.

It is an arithmetic number, because the mean of its divisors is an integer number (79241085).

Almost surely, 2^1214331761 is an apocalyptic number.

It is an amenable number.

1214331761 is a deficient number, since it is larger than the sum of its proper divisors (53525599).

1214331761 is a wasteful number, since it uses less digits than its factorization.

1214331761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156.

The product of its digits is 3024, while the sum is 29.

The square root of 1214331761 is about 34847.2633215293. The cubic root of 1214331761 is about 1066.8723295604.

Adding to 1214331761 its reverse (1671334121), we get a palindrome (2885665882).

The spelling of 1214331761 in words is "one billion, two hundred fourteen million, three hundred thirty-one thousand, seven hundred sixty-one".