353500234230421 has 2 divisors, whose sum is σ = 353500234230422. Its totient is φ = 353500234230420.

The previous prime is 353500234230349. The next prime is 353500234230439. The reversal of 353500234230421 is 124032432005353.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343357601667921 + 10142632562500 = 18529911^2 + 3184750^2 .

It is a cyclic number.

It is not a de Polignac number, because 353500234230421 - 2¹¹ = 353500234228373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (353500234234421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176750117115210 + 176750117115211.

It is an arithmetic number, because the mean of its divisors is an integer number (176750117115211).

Almost surely, 2^{353500234230421} is an apocalyptic number.

It is an amenable number.

353500234230421 is a deficient number, since it is larger than the sum of its proper divisors (1).

353500234230421 is an equidigital number, since it uses as much as digits as its factorization.

353500234230421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 37.

Adding to 353500234230421 its reverse (124032432005353), we get a palindrome (477532666235774).

The spelling of 353500234230421 in words is "three hundred fifty-three trillion, five hundred billion, two hundred thirty-four million, two hundred thirty thousand, four hundred twenty-one".