30981043 has 8 divisors (see below), whose sum is σ = 31530240. Its totient is φ = 30436800.

The previous prime is 30981031. The next prime is 30981047. The reversal of 30981043 is 34018903.

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 30981043 - 2²¹ = 28883891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30981047) 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, 12718 + ... + 14956.

It is an arithmetic number, because the mean of its divisors is an integer number (3941280).

Almost surely, 2^30981043 is an apocalyptic number.

30981043 is a deficient number, since it is larger than the sum of its proper divisors (549197).

30981043 is a wasteful number, since it uses less digits than its factorization.

30981043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477.

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

The square root of 30981043 is about 5566.0617136356. The cubic root of 30981043 is about 314.0740186843.

Adding to 30981043 its reverse (34018903), we get a palindrome (64999946).

The spelling of 30981043 in words is "thirty million, nine hundred eighty-one thousand, forty-three".