30491343 has 16 divisors (see below), whose sum is σ = 46224640. Its totient is φ = 19854072.

The previous prime is 30491341. The next prime is 30491347. The reversal of 30491343 is 34319403.

It is not a de Polignac number, because 30491343 - 2¹ = 30491341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30491341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11971 + ... + 14292.

It is an arithmetic number, because the mean of its divisors is an integer number (2889040).

Almost surely, 2^30491343 is an apocalyptic number.

30491343 is a deficient number, since it is larger than the sum of its proper divisors (15733297).

30491343 is a wasteful number, since it uses less digits than its factorization.

30491343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26315 (or 26309 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 30491343 is about 5521.8966850168. The cubic root of 30491343 is about 312.4104251001.

The spelling of 30491343 in words is "thirty million, four hundred ninety-one thousand, three hundred forty-three".