30121045313 has 4 divisors (see below), whose sum is σ = 31092691968. Its totient is φ = 29149398660.

The previous prime is 30121045291. The next prime is 30121045319. The reversal of 30121045313 is 31354012103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31354012103 = 547 ⋅57319949.

It is a cyclic number.

It is not a de Polignac number, because 30121045313 - 2⁸ = 30121045057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30121045319) 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, 485823281 + ... + 485823342.

It is an arithmetic number, because the mean of its divisors is an integer number (7773172992).

Almost surely, 2^30121045313 is an apocalyptic number.

It is an amenable number.

30121045313 is a deficient number, since it is larger than the sum of its proper divisors (971646655).

30121045313 is an equidigital number, since it uses as much as digits as its factorization.

30121045313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971646654.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 30121045313 its reverse (31354012103), we get a palindrome (61475057416).

The spelling of 30121045313 in words is "thirty billion, one hundred twenty-one million, forty-five thousand, three hundred thirteen".