234131021 has 8 divisors (see below), whose sum is σ = 248343480. Its totient is φ = 219967488.

The previous prime is 234131011. The next prime is 234131039. The reversal of 234131021 is 120131432.

It can be written as a sum of positive squares in 4 ways, for example, as 174609796 + 59521225 = 13214^2 + 7715^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 234131021 - 2¹⁰ = 234129997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234131011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2126 + ... + 21743.

It is an arithmetic number, because the mean of its divisors is an integer number (31042935).

Almost surely, 2^234131021 is an apocalyptic number.

It is an amenable number.

234131021 is a deficient number, since it is larger than the sum of its proper divisors (14212459).

234131021 is a wasteful number, since it uses less digits than its factorization.

234131021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24463.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 234131021 is about 15301.3404968323. The cubic root of 234131021 is about 616.3390051202.

Adding to 234131021 its reverse (120131432), we get a palindrome (354262453).

The spelling of 234131021 in words is "two hundred thirty-four million, one hundred thirty-one thousand, twenty-one".