235231214521 has 2 divisors, whose sum is σ = 235231214522. Its totient is φ = 235231214520.

The previous prime is 235231214489. The next prime is 235231214527. The reversal of 235231214521 is 125412132532.

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., 134655972025 + 100575242496 = 366955^2 + 317136^2 .

It is a cyclic number.

It is not a de Polignac number, because 235231214521 - 2⁵ = 235231214489 is a prime.

It is not a weakly prime, because it can be changed into another prime (235231214527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117615607260 + 117615607261.

It is an arithmetic number, because the mean of its divisors is an integer number (117615607261).

Almost surely, 2^235231214521 is an apocalyptic number.

It is an amenable number.

235231214521 is a deficient number, since it is larger than the sum of its proper divisors (1).

235231214521 is an equidigital number, since it uses as much as digits as its factorization.

235231214521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 31.

The spelling of 235231214521 in words is "two hundred thirty-five billion, two hundred thirty-one million, two hundred fourteen thousand, five hundred twenty-one".