234090581 has 16 divisors (see below), whose sum is σ = 249860160. Its totient is φ = 218924160.

The previous prime is 234090551. The next prime is 234090587. The reversal of 234090581 is 185090432.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234090581 is a prime.

It is a super-2 number, since 2×234090581² = 109596800225835122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234090587) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 162641 + ... + 164073.

It is an arithmetic number, because the mean of its divisors is an integer number (15616260).

Almost surely, 2^234090581 is an apocalyptic number.

It is an amenable number.

234090581 is a deficient number, since it is larger than the sum of its proper divisors (15769579).

234090581 is a wasteful number, since it uses less digits than its factorization.

234090581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 234090581 is about 15300.0189869163. The cubic root of 234090581 is about 616.3035176049.

The spelling of 234090581 in words is "two hundred thirty-four million, ninety thousand, five hundred eighty-one".