30126431 has 8 divisors (see below), whose sum is σ = 32677344. Its totient is φ = 27662080.

The previous prime is 30126409. The next prime is 30126449. The reversal of 30126431 is 13462103.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30126431 is a prime.

It is a super-2 number, since 2×30126431² = 1815203689595522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30126461) 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, 20915 + ... + 22308.

It is an arithmetic number, because the mean of its divisors is an integer number (4084668).

Almost surely, 2^30126431 is an apocalyptic number.

30126431 is a deficient number, since it is larger than the sum of its proper divisors (2550913).

30126431 is a wasteful number, since it uses less digits than its factorization.

30126431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43281.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 30126431 is about 5488.7549590048. The cubic root of 30126431 is about 311.1591394058.

Adding to 30126431 its reverse (13462103), we get a palindrome (43588534).

The spelling of 30126431 in words is "thirty million, one hundred twenty-six thousand, four hundred thirty-one".