30431042009 has 4 divisors (see below), whose sum is σ = 31754130816. Its totient is φ = 29107953204.

The previous prime is 30431041987. The next prime is 30431042011. The reversal of 30431042009 is 90024013403.

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: 90024013403 = 6173 ⋅14583511.

It is a cyclic number.

It is not a de Polignac number, because 30431042009 - 2¹⁶ = 30430976473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30431042039) 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, 661544369 + ... + 661544414.

It is an arithmetic number, because the mean of its divisors is an integer number (7938532704).

Almost surely, 2^30431042009 is an apocalyptic number.

It is an amenable number.

30431042009 is a deficient number, since it is larger than the sum of its proper divisors (1323088807).

30431042009 is a wasteful number, since it uses less digits than its factorization.

30431042009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323088806.

The product of its (nonzero) digits is 2592, while the sum is 26.

The spelling of 30431042009 in words is "thirty billion, four hundred thirty-one million, forty-two thousand, nine".