1214313641 has 4 divisors (see below), whose sum is σ = 1234220484. Its totient is φ = 1194406800.

The previous prime is 1214313637. The next prime is 1214313643. The reversal of 1214313641 is 1463134121.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26822041 + 1187491600 = 5179^2 + 34460^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214313641 - 2² = 1214313637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1214313641.

It is not an unprimeable number, because it can be changed into a prime (1214313643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9953330 + ... + 9953451.

It is an arithmetic number, because the mean of its divisors is an integer number (308555121).

Almost surely, 2^1214313641 is an apocalyptic number.

It is an amenable number.

1214313641 is a deficient number, since it is larger than the sum of its proper divisors (19906843).

1214313641 is an equidigital number, since it uses as much as digits as its factorization.

1214313641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19906842.

The product of its digits is 1728, while the sum is 26.

The square root of 1214313641 is about 34847.0033288373. The cubic root of 1214313641 is about 1066.8670229867.

Adding to 1214313641 its reverse (1463134121), we get a palindrome (2677447762).

The spelling of 1214313641 in words is "one billion, two hundred fourteen million, three hundred thirteen thousand, six hundred forty-one".