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1220414231 = 31313125777
BaseRepresentation
bin100100010111110…
…0000101100010111
310011001102110121002
41020233200230113
54444411223411
6321033413515
742146230661
oct11057405427
93131373532
101220414231
1157698a303
122a086a29b
13165ac12ca
14b8125531
157221e33b
hex48be0b17

1220414231 has 8 divisors (see below), whose sum is σ = 1263817344. Its totient is φ = 1177263360.

The previous prime is 1220414197. The next prime is 1220414257. The reversal of 1220414231 is 1324140221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1220414231 is a prime.

It is a super-2 number, since 2×12204142312 = 2978821790454642722, 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 (1220414291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53186 + ... + 72591.

It is an arithmetic number, because the mean of its divisors is an integer number (157977168).

Almost surely, 21220414231 is an apocalyptic number.

1220414231 is a deficient number, since it is larger than the sum of its proper divisors (43403113).

1220414231 is a wasteful number, since it uses less digits than its factorization.

1220414231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126121.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1220414231 is about 34934.4275894139. The cubic root of 1220414231 is about 1068.6506503821.

Adding to 1220414231 its reverse (1324140221), we get a palindrome (2544554452).

The spelling of 1220414231 in words is "one billion, two hundred twenty million, four hundred fourteen thousand, two hundred thirty-one".

Divisors: 1 31 313 9703 125777 3899087 39368201 1220414231