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30113231 is a prime number
BaseRepresentation
bin111001011011…
…1110111001111
32002122220120212
41302313313033
530202110411
62553233035
7513646451
oct162676717
962586525
1030113231
1115aa8575
12a10277b
1363146a5
143ddc2d1
15299c68b
hex1cb7dcf

30113231 has 2 divisors, whose sum is σ = 30113232. Its totient is φ = 30113230.

The previous prime is 30113221. The next prime is 30113263. The reversal of 30113231 is 13231103.

Adding to 30113231 its reverse (13231103), we get a palindrome (43344334).

It is a weak prime.

It is an emirp because it is prime and its reverse (13231103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30113231 - 222 = 25918927 is a prime.

It is a super-2 number, since 2×301132312 = 1813613362518722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30113221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15056615 + 15056616.

It is an arithmetic number, because the mean of its divisors is an integer number (15056616).

Almost surely, 230113231 is an apocalyptic number.

30113231 is a deficient number, since it is larger than the sum of its proper divisors (1).

30113231 is an equidigital number, since it uses as much as digits as its factorization.

30113231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 30113231 is about 5487.5523687706. The cubic root of 30113231 is about 311.1136876157.

The spelling of 30113231 in words is "thirty million, one hundred thirteen thousand, two hundred thirty-one".