30145321051 has 4 divisors (see below), whose sum is σ = 30639506704. Its totient is φ = 29651135400.

The previous prime is 30145321039. The next prime is 30145321069. The reversal of 30145321051 is 15012354103.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30145321051 - 2¹³ = 30145312859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30145321001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247092735 + ... + 247092856.

It is an arithmetic number, because the mean of its divisors is an integer number (7659876676).

Almost surely, 2^30145321051 is an apocalyptic number.

30145321051 is a deficient number, since it is larger than the sum of its proper divisors (494185653).

30145321051 is an equidigital number, since it uses as much as digits as its factorization.

30145321051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494185652.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 30145321051 its reverse (15012354103), we get a palindrome (45157675154).

The spelling of 30145321051 in words is "thirty billion, one hundred forty-five million, three hundred twenty-one thousand, fifty-one".