30481143 has 32 divisors (see below), whose sum is σ = 51118080. Its totient is φ = 15694560.

The previous prime is 30481133. The next prime is 30481147. The reversal of 30481143 is 34118403.

It is not a de Polignac number, because 30481143 - 2⁸ = 30480887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30481147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28818 + ... + 29856.

It is an arithmetic number, because the mean of its divisors is an integer number (1597440).

Almost surely, 2^30481143 is an apocalyptic number.

30481143 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

30481143 is a deficient number, since it is larger than the sum of its proper divisors (20636937).

30481143 is a wasteful number, since it uses less digits than its factorization.

30481143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 30481143 is about 5520.9730120695. The cubic root of 30481143 is about 312.3755852470.

Adding to 30481143 its reverse (34118403), we get a palindrome (64599546).

The spelling of 30481143 in words is "thirty million, four hundred eighty-one thousand, one hundred forty-three".