30743981213 has 4 divisors (see below), whose sum is σ = 33538888608. Its totient is φ = 27949073820.

The previous prime is 30743981209. The next prime is 30743981227. The reversal of 30743981213 is 31218934703.

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 30743981213 - 2² = 30743981209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30743981713) 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, 1397453681 + ... + 1397453702.

It is an arithmetic number, because the mean of its divisors is an integer number (8384722152).

Almost surely, 2^30743981213 is an apocalyptic number.

It is an amenable number.

30743981213 is a deficient number, since it is larger than the sum of its proper divisors (2794907395).

30743981213 is a wasteful number, since it uses less digits than its factorization.

30743981213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2794907394.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 30743981213 in words is "thirty billion, seven hundred forty-three million, nine hundred eighty-one thousand, two hundred thirteen".