30143137 has 2 divisors, whose sum is σ = 30143138. Its totient is φ = 30143136.

The previous prime is 30143119. The next prime is 30143149. The reversal of 30143137 is 73134103.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22695696 + 7447441 = 4764^2 + 2729^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30143137 is a prime.

It is not a weakly prime, because it can be changed into another prime (30143117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15071568 + 15071569.

It is an arithmetic number, because the mean of its divisors is an integer number (15071569).

Almost surely, 2^30143137 is an apocalyptic number.

It is an amenable number.

30143137 is a deficient number, since it is larger than the sum of its proper divisors (1).

30143137 is an equidigital number, since it uses as much as digits as its factorization.

30143137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 30143137 is about 5490.2765868397. The cubic root of 30143137 is about 311.2166444366.

The spelling of 30143137 in words is "thirty million, one hundred forty-three thousand, one hundred thirty-seven".