234972981 has 24 divisors (see below), whose sum is σ = 370508320. Its totient is φ = 148401072.

The previous prime is 234972979. The next prime is 234973001. The reversal of 234972981 is 189279432.

It is not a de Polignac number, because 234972981 - 2¹ = 234972979 is a prime.

It is a super-2 number, since 2×234972981² = 110424603600052722, 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 (234971981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20830 + ... + 30063.

Almost surely, 2^234972981 is an apocalyptic number.

It is an amenable number.

234972981 is a deficient number, since it is larger than the sum of its proper divisors (135535339).

234972981 is an equidigital number, since it uses as much as digits as its factorization.

234972981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50927 (or 50915 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 234972981 is about 15328.8284288135. The cubic root of 234972981 is about 617.0769281009.

The spelling of 234972981 in words is "two hundred thirty-four million, nine hundred seventy-two thousand, nine hundred eighty-one".