231214555 has 16 divisors (see below), whose sum is σ = 325965024. Its totient is φ = 155220480.

The previous prime is 231214541. The next prime is 231214619. The reversal of 231214555 is 555412132.

It is not a de Polignac number, because 231214555 - 2⁹ = 231214043 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160974 + ... + 162403.

It is an arithmetic number, because the mean of its divisors is an integer number (20372814).

Almost surely, 2^231214555 is an apocalyptic number.

231214555 is a deficient number, since it is larger than the sum of its proper divisors (94750469).

231214555 is a wasteful number, since it uses less digits than its factorization.

231214555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323406.

The product of its digits is 6000, while the sum is 28.

The square root of 231214555 is about 15205.7408566633. The cubic root of 231214555 is about 613.7691512642.

Adding to 231214555 its reverse (555412132), we get a palindrome (786626687).

The spelling of 231214555 in words is "two hundred thirty-one million, two hundred fourteen thousand, five hundred fifty-five".