30401983 has 4 divisors (see below), whose sum is σ = 30429288. Its totient is φ = 30374680.

The previous prime is 30401981. The next prime is 30402013. The reversal of 30401983 is 38910403.

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 30401983 - 2¹ = 30401981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30401981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11908 + ... + 14233.

It is an arithmetic number, because the mean of its divisors is an integer number (7607322).

Almost surely, 2^30401983 is an apocalyptic number.

30401983 is a deficient number, since it is larger than the sum of its proper divisors (27305).

30401983 is a wasteful number, since it uses less digits than its factorization.

30401983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27304.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 30401983 is about 5513.7993253291. The cubic root of 30401983 is about 312.1049360755.

The spelling of 30401983 in words is "thirty million, four hundred one thousand, nine hundred eighty-three".