30249431 has 8 divisors (see below), whose sum is σ = 31062528. Its totient is φ = 29440000.

The previous prime is 30249413. The next prime is 30249449. The reversal of 30249431 is 13494203.

It is an interprime number because it is at equal distance from previous prime (30249413) and next prime (30249449).

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 30249431 - 2⁶ = 30249367 is a prime.

It is a super-2 number, since 2×30249431² = 1830056151647522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30249431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30249491) 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, 25706 + ... + 26856.

It is an arithmetic number, because the mean of its divisors is an integer number (3882816).

Almost surely, 2^30249431 is an apocalyptic number.

30249431 is a deficient number, since it is larger than the sum of its proper divisors (813097).

30249431 is a wasteful number, since it uses less digits than its factorization.

30249431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833.

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

The square root of 30249431 is about 5499.9482724840. The cubic root of 30249431 is about 311.5820305832.

The spelling of 30249431 in words is "thirty million, two hundred forty-nine thousand, four hundred thirty-one".