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1013122231 = 11220993989
BaseRepresentation
bin111100011000110…
…000010010110111
32121121100221102121
4330120300102313
54033324402411
6244310420411
734051253062
oct7430602267
92547327377
101013122231
1147a976800
12243361707
13131b82c14
14987a58d9
155de24571
hex3c6304b7

1013122231 has 12 divisors (see below), whose sum is σ = 1114407000. Its totient is φ = 920350640.

The previous prime is 1013122219. The next prime is 1013122273. The reversal of 1013122231 is 1322213101.

1013122231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1013122231 - 211 = 1013120183 is a prime.

It is a super-2 number, since 2×10131222312 = 2052833309892834722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013120231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 251985 + ... + 255973.

It is an arithmetic number, because the mean of its divisors is an integer number (92867250).

Almost surely, 21013122231 is an apocalyptic number.

1013122231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1013122231 is a deficient number, since it is larger than the sum of its proper divisors (101284769).

1013122231 is a wasteful number, since it uses less digits than its factorization.

1013122231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110 (or 6099 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1013122231 is about 31829.5810685595. The cubic root of 1013122231 is about 1004.3550827206.

Adding to 1013122231 its reverse (1322213101), we get a palindrome (2335335332).

The spelling of 1013122231 in words is "one billion, thirteen million, one hundred twenty-two thousand, two hundred thirty-one".

Divisors: 1 11 121 2099 3989 23089 43879 253979 482669 8372911 92102021 1013122231