30620251013 has 4 divisors (see below), whose sum is σ = 33403910208. Its totient is φ = 27836591820.

The previous prime is 30620251009. The next prime is 30620251019. The reversal of 30620251013 is 31015202603.

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.

It is a cyclic number.

It is not a de Polignac number, because 30620251013 - 2² = 30620251009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30620251013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30620251019) 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, 1391829581 + ... + 1391829602.

It is an arithmetic number, because the mean of its divisors is an integer number (8350977552).

Almost surely, 2^30620251013 is an apocalyptic number.

It is an amenable number.

30620251013 is a deficient number, since it is larger than the sum of its proper divisors (2783659195).

30620251013 is a wasteful number, since it uses less digits than its factorization.

30620251013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783659194.

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

Adding to 30620251013 its reverse (31015202603), we get a palindrome (61635453616).

The spelling of 30620251013 in words is "thirty billion, six hundred twenty million, two hundred fifty-one thousand, thirteen".