30742431 has 4 divisors (see below), whose sum is σ = 40989912. Its totient is φ = 20494952.

The previous prime is 30742427. The next prime is 30742433. The reversal of 30742431 is 13424703.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30742431 - 2² = 30742427 is a prime.

It is a super-2 number, since 2×30742431² = 1890194127579522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30742433) 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, 5123736 + ... + 5123741.

It is an arithmetic number, because the mean of its divisors is an integer number (10247478).

Almost surely, 2^30742431 is an apocalyptic number.

30742431 is a deficient number, since it is larger than the sum of its proper divisors (10247481).

30742431 is a wasteful number, since it uses less digits than its factorization.

30742431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10247480.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 30742431 is about 5544.5857374560. The cubic root of 30742431 is about 313.2656205222.

The spelling of 30742431 in words is "thirty million, seven hundred forty-two thousand, four hundred thirty-one".