1231854955 has 8 divisors (see below), whose sum is σ = 1478948112. Its totient is φ = 985002528.

The previous prime is 1231854947. The next prime is 1231854961. The reversal of 1231854955 is 5594581321.

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

It is a cyclic number.

It is not a de Polignac number, because 1231854955 - 2³ = 1231854947 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48724 + ... + 69553.

It is an arithmetic number, because the mean of its divisors is an integer number (184868514).

Almost surely, 2^1231854955 is an apocalyptic number.

1231854955 is a deficient number, since it is larger than the sum of its proper divisors (247093157).

1231854955 is a wasteful number, since it uses less digits than its factorization.

1231854955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120365.

The product of its digits is 216000, while the sum is 43.

The square root of 1231854955 is about 35097.7913122749. The cubic root of 1231854955 is about 1071.9796103621.

The spelling of 1231854955 in words is "one billion, two hundred thirty-one million, eight hundred fifty-four thousand, nine hundred fifty-five".