30926143 has 2 divisors, whose sum is σ = 30926144. Its totient is φ = 30926142.

The previous prime is 30926131. The next prime is 30926149. The reversal of 30926143 is 34162903.

It is a strong prime.

It is an emirp because it is prime and its reverse (34162903) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30926143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30926149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15463071 + 15463072.

It is an arithmetic number, because the mean of its divisors is an integer number (15463072).

Almost surely, 2^30926143 is an apocalyptic number.

30926143 is a deficient number, since it is larger than the sum of its proper divisors (1).

30926143 is an equidigital number, since it uses as much as digits as its factorization.

30926143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 30926143 is about 5561.1278532327. The cubic root of 30926143 is about 313.8883905608. Note that the first 3 decimals are identical.

The spelling of 30926143 in words is "thirty million, nine hundred twenty-six thousand, one hundred forty-three".