234560991 has 12 divisors (see below), whose sum is σ = 363809112. Its totient is φ = 134034768.

The previous prime is 234560981. The next prime is 234561007. The reversal of 234560991 is 199065432.

It is not a de Polignac number, because 234560991 - 2⁶ = 234560927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234560981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 797680 + ... + 797973.

It is an arithmetic number, because the mean of its divisors is an integer number (30317426).

Almost surely, 2^234560991 is an apocalyptic number.

234560991 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

234560991 is a deficient number, since it is larger than the sum of its proper divisors (129248121).

234560991 is a wasteful number, since it uses less digits than its factorization.

234560991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595670 (or 1595663 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 234560991 is about 15315.3841283854. The cubic root of 234560991 is about 616.7160663940.

It can be divided in two parts, 2345 and 60991, that added together give a palindrome (63336).

The spelling of 234560991 in words is "two hundred thirty-four million, five hundred sixty thousand, nine hundred ninety-one".