234375981 has 32 divisors (see below), whose sum is σ = 369266688. Its totient is φ = 129455040.

The previous prime is 234375971. The next prime is 234376013. The reversal of 234375981 is 189573432.

It is not a de Polignac number, because 234375981 - 2⁵ = 234375949 is a prime.

It is a super-2 number, since 2×234375981² = 109864200939424722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234375931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80491 + ... + 83351.

It is an arithmetic number, because the mean of its divisors is an integer number (11539584).

Almost surely, 2^234375981 is an apocalyptic number.

234375981 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

234375981 is a deficient number, since it is larger than the sum of its proper divisors (134890707).

234375981 is a wasteful number, since it uses less digits than its factorization.

234375981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3001.

The product of its digits is 181440, while the sum is 42.

The square root of 234375981 is about 15309.3429316872. The cubic root of 234375981 is about 616.5538787962.

The spelling of 234375981 in words is "two hundred thirty-four million, three hundred seventy-five thousand, nine hundred eighty-one".