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1223422031 = 13637914753
BaseRepresentation
bin100100011101011…
…1111000001001111
310011021002021112002
41020322333001033
510001144001111
6321222102515
742213626036
oct11072770117
93137067462
101223422031
11578654097
122a187aa3b
13166605380
14b86a971d
157261563b
hex48ebf04f

1223422031 has 8 divisors (see below), whose sum is σ = 1317827280. Its totient is φ = 1129059072.

The previous prime is 1223422021. The next prime is 1223422033. The reversal of 1223422031 is 1302243221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223422031 - 26 = 1223421967 is a prime.

It is a super-2 number, since 2×12234220312 = 2993522931872329922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223421994 and 1223422012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223422033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75551 + ... + 90303.

It is an arithmetic number, because the mean of its divisors is an integer number (164728410).

Almost surely, 21223422031 is an apocalyptic number.

1223422031 is a deficient number, since it is larger than the sum of its proper divisors (94405249).

1223422031 is a wasteful number, since it uses less digits than its factorization.

1223422031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21145.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1223422031 is about 34977.4503216001. The cubic root of 1223422031 is about 1069.5278526573.

Adding to 1223422031 its reverse (1302243221), we get a palindrome (2525665252).

The spelling of 1223422031 in words is "one billion, two hundred twenty-three million, four hundred twenty-two thousand, thirty-one".

Divisors: 1 13 6379 14753 82927 191789 94109387 1223422031