1431621055 has 16 divisors (see below), whose sum is σ = 1742796000. Its totient is φ = 1128849280.

The previous prime is 1431621041. The next prime is 1431621073. The reversal of 1431621055 is 5501261341.

It is not a de Polignac number, because 1431621055 - 2²¹ = 1429523903 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90261 + ... + 104929.

It is an arithmetic number, because the mean of its divisors is an integer number (108924750).

Almost surely, 2^1431621055 is an apocalyptic number.

1431621055 is a deficient number, since it is larger than the sum of its proper divisors (311174945).

1431621055 is a wasteful number, since it uses less digits than its factorization.

1431621055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14954.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1431621055 is about 37836.7685591674. The cubic root of 1431621055 is about 1127.0487257522.

Adding to 1431621055 its reverse (5501261341), we get a palindrome (6932882396).

The spelling of 1431621055 in words is "one billion, four hundred thirty-one million, six hundred twenty-one thousand, fifty-five".