234681381 has 24 divisors (see below), whose sum is σ = 383501664. Its totient is φ = 142229520.

The previous prime is 234681371. The next prime is 234681383. The reversal of 234681381 is 183186432.

It is not a de Polignac number, because 234681381 - 2¹³ = 234673189 is a prime.

It is a super-2 number, since 2×234681381² = 110150701176134322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234681383) 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 23 ways as a sum of consecutive naturals, for example, 41226 + ... + 46571.

It is an arithmetic number, because the mean of its divisors is an integer number (15979236).

Almost surely, 2^234681381 is an apocalyptic number.

It is an amenable number.

234681381 is a deficient number, since it is larger than the sum of its proper divisors (148820283).

234681381 is an equidigital number, since it uses as much as digits as its factorization.

234681381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87823 (or 87811 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 234681381 is about 15319.3139859460. The cubic root of 234681381 is about 616.8215595653.

The spelling of 234681381 in words is "two hundred thirty-four million, six hundred eighty-one thousand, three hundred eighty-one".