231904855 has 16 divisors (see below), whose sum is σ = 342506304. Its totient is φ = 146787840.

The previous prime is 231904853. The next prime is 231904877. The reversal of 231904855 is 558409132.

It is not a de Polignac number, because 231904855 - 2¹ = 231904853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231904853) 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, 254386 + ... + 255295.

It is an arithmetic number, because the mean of its divisors is an integer number (21406644).

Almost surely, 2^231904855 is an apocalyptic number.

231904855 is a deficient number, since it is larger than the sum of its proper divisors (110601449).

231904855 is a wasteful number, since it uses less digits than its factorization.

231904855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509706.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 231904855 is about 15228.4226038024. The cubic root of 231904855 is about 614.3793549206.

The spelling of 231904855 in words is "two hundred thirty-one million, nine hundred four thousand, eight hundred fifty-five".