1230320055 has 16 divisors (see below), whose sum is σ = 1974808800. Its totient is φ = 654071808.

The previous prime is 1230320029. The next prime is 1230320057. The reversal of 1230320055 is 5500230321.

It is not a de Polignac number, because 1230320055 - 2⁵ = 1230320023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230320057) 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, 126330 + ... + 135719.

It is an arithmetic number, because the mean of its divisors is an integer number (123425550).

Almost surely, 2^1230320055 is an apocalyptic number.

1230320055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1230320055 is a deficient number, since it is larger than the sum of its proper divisors (744488745).

1230320055 is a wasteful number, since it uses less digits than its factorization.

1230320055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262370.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 1230320055 is about 35075.9184484170. The cubic root of 1230320055 is about 1071.5341939174.

Adding to 1230320055 its reverse (5500230321), we get a palindrome (6730550376).

The spelling of 1230320055 in words is "one billion, two hundred thirty million, three hundred twenty thousand, fifty-five".