234031130521 has 2 divisors, whose sum is σ = 234031130522. Its totient is φ = 234031130520.

The previous prime is 234031130429. The next prime is 234031130527. The reversal of 234031130521 is 125031130432.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216191521296 + 17839609225 = 464964^2 + 133565^2 .

It is a cyclic number.

It is not a de Polignac number, because 234031130521 - 2²¹ = 234029033369 is a prime.

It is not a weakly prime, because it can be changed into another prime (234031130527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117015565260 + 117015565261.

It is an arithmetic number, because the mean of its divisors is an integer number (117015565261).

Almost surely, 2^234031130521 is an apocalyptic number.

It is an amenable number.

234031130521 is a deficient number, since it is larger than the sum of its proper divisors (1).

234031130521 is an equidigital number, since it uses as much as digits as its factorization.

234031130521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 234031130521 its reverse (125031130432), we get a palindrome (359062260953).

The spelling of 234031130521 in words is "two hundred thirty-four billion, thirty-one million, one hundred thirty thousand, five hundred twenty-one".