30012431989 has 2 divisors, whose sum is σ = 30012431990. Its totient is φ = 30012431988.

The previous prime is 30012431983. The next prime is 30012432071. The reversal of 30012431989 is 98913421003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29564051364 + 448380625 = 171942^2 + 21175^2 .

It is an emirp because it is prime and its reverse (98913421003) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30012431989 is a prime.

It is a super-2 number, since 2×30012431989² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30012431983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15006215994 + 15006215995.

It is an arithmetic number, because the mean of its divisors is an integer number (15006215995).

Almost surely, 2^30012431989 is an apocalyptic number.

It is an amenable number.

30012431989 is a deficient number, since it is larger than the sum of its proper divisors (1).

30012431989 is an equidigital number, since it uses as much as digits as its factorization.

30012431989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 30012431989 in words is "thirty billion, twelve million, four hundred thirty-one thousand, nine hundred eighty-nine".