231328554 has 32 divisors (see below), whose sum is σ = 491126976. Its totient is φ = 72387840.

The previous prime is 231328547. The next prime is 231328561. The reversal of 231328554 is 455823132.

It is an interprime number because it is at equal distance from previous prime (231328547) and next prime (231328561).

It is a Curzon number.

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, 40249 + ... + 45635.

It is an arithmetic number, because the mean of its divisors is an integer number (15347718).

Almost surely, 2^231328554 is an apocalyptic number.

231328554 is an abundant number, since it is smaller than the sum of its proper divisors (259798422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231328554 is a wasteful number, since it uses less digits than its factorization.

231328554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5830.

The product of its digits is 28800, while the sum is 33.

The square root of 231328554 is about 15209.4889460494. The cubic root of 231328554 is about 613.8700064682.

The spelling of 231328554 in words is "two hundred thirty-one million, three hundred twenty-eight thousand, five hundred fifty-four".