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30000023 is a prime number
BaseRepresentation
bin111001001110…
…0001110010111
32002110011021222
41302130032113
530140000043
62551000555
7512665424
oct162341627
962404258
1030000023
1115a30509
12a06915b
1362a4cc1
143dacd4b
152978d68
hex1c9c397

30000023 has 2 divisors, whose sum is σ = 30000024. Its totient is φ = 30000022.

The previous prime is 30000001. The next prime is 30000037. The reversal of 30000023 is 32000003.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30000023 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30000083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15000011 + 15000012.

It is an arithmetic number, because the mean of its divisors is an integer number (15000012).

Almost surely, 230000023 is an apocalyptic number.

30000023 is a deficient number, since it is larger than the sum of its proper divisors (1).

30000023 is an equidigital number, since it uses as much as digits as its factorization.

30000023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 8.

The square root of 30000023 is about 5477.2276746544. The cubic root of 30000023 is about 310.7233300024.

Adding to 30000023 its reverse (32000003), we get a palindrome (62000026).

The spelling of 30000023 in words is "thirty million, twenty-three", and thus it is an aban number and an uban number.