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1012012231 is a prime number
BaseRepresentation
bin111100010100100…
…001010011000111
32121112021112210111
4330110201103013
54033033342411
6244230533451
734035650656
oct7424412307
92545245714
101012012231
1147a28884a
12242b07287
13131884909
149859719d
155dca5721
hex3c5214c7

1012012231 has 2 divisors, whose sum is σ = 1012012232. Its totient is φ = 1012012230.

The previous prime is 1012012229. The next prime is 1012012247. The reversal of 1012012231 is 1322102101.

It is a weak prime.

It is an emirp because it is prime and its reverse (1322102101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1012012231 - 21 = 1012012229 is a prime.

It is a super-2 number, since 2×10120122312 = 2048337511387194722, which contains 22 as substring.

Together with 1012012229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012012201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506006115 + 506006116.

It is an arithmetic number, because the mean of its divisors is an integer number (506006116).

Almost surely, 21012012231 is an apocalyptic number.

1012012231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012012231 is an equidigital number, since it uses as much as digits as its factorization.

1012012231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1012012231 is about 31812.1396796883. The cubic root of 1012012231 is about 1003.9881505112.

Adding to 1012012231 its reverse (1322102101), we get a palindrome (2334114332).

The spelling of 1012012231 in words is "one billion, twelve million, twelve thousand, two hundred thirty-one".