30442431 has 8 divisors (see below), whose sum is σ = 41989680. Its totient is φ = 19595072.

The previous prime is 30442429. The next prime is 30442439. The reversal of 30442431 is 13424403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30442431 - 2¹ = 30442429 is a prime.

It is a super-2 number, since 2×30442431² = 1853483210379522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30442398 and 30442407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30442439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174870 + ... + 175043.

It is an arithmetic number, because the mean of its divisors is an integer number (5248710).

Almost surely, 2^30442431 is an apocalyptic number.

30442431 is a deficient number, since it is larger than the sum of its proper divisors (11547249).

30442431 is a wasteful number, since it uses less digits than its factorization.

30442431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349945.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 30442431 is about 5517.4659944580. The cubic root of 30442431 is about 312.2432869861.

Adding to 30442431 its reverse (13424403), we get a palindrome (43866834).

The spelling of 30442431 in words is "thirty million, four hundred forty-two thousand, four hundred thirty-one".