1214431555 has 8 divisors (see below), whose sum is σ = 1457686944. Its totient is φ = 971299200.

The previous prime is 1214431553. The next prime is 1214431591. The reversal of 1214431555 is 5551344121.

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

It is not a de Polignac number, because 1214431555 - 2¹ = 1214431553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1214431553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7431 + ... + 49840.

It is an arithmetic number, because the mean of its divisors is an integer number (182210868).

Almost surely, 2^1214431555 is an apocalyptic number.

1214431555 is a deficient number, since it is larger than the sum of its proper divisors (243255389).

1214431555 is an equidigital number, since it uses as much as digits as its factorization.

1214431555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61517.

The product of its digits is 12000, while the sum is 31.

The square root of 1214431555 is about 34848.6951692599. The cubic root of 1214431555 is about 1066.9015540124.

Adding to 1214431555 its reverse (5551344121), we get a palindrome (6765775676).

The spelling of 1214431555 in words is "one billion, two hundred fourteen million, four hundred thirty-one thousand, five hundred fifty-five".