1230030521 has 2 divisors, whose sum is σ = 1230030522. Its totient is φ = 1230030520.

The previous prime is 1230030511. The next prime is 1230030539. The reversal of 1230030521 is 1250300321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1206798121 + 23232400 = 34739^2 + 4820^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230030521 - 2⁶ = 1230030457 is a prime.

It is a super-3 number, since 3×1230030521³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1230030521.

It is not a weakly prime, because it can be changed into another prime (1230030511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615015260 + 615015261.

It is an arithmetic number, because the mean of its divisors is an integer number (615015261).

Almost surely, 2^1230030521 is an apocalyptic number.

It is an amenable number.

1230030521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230030521 is an equidigital number, since it uses as much as digits as its factorization.

1230030521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 1230030521 is about 35071.7909579765. The cubic root of 1230030521 is about 1071.4501318015.

Adding to 1230030521 its reverse (1250300321), we get a palindrome (2480330842).

The spelling of 1230030521 in words is "one billion, two hundred thirty million, thirty thousand, five hundred twenty-one".