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1304422431 = 313307108947
BaseRepresentation
bin100110110111111…
…1110100000011111
310100220111112011220
41031233332200133
510132413004211
6333234144423
744216256564
oct11557764037
93326445156
101304422431
1160a348974
12304a22113
1317a325bc0
14c535286b
15797b5806
hex4dbfe81f

1304422431 has 16 divisors (see below), whose sum is σ = 1879135104. Its totient is φ = 800099424.

The previous prime is 1304422369. The next prime is 1304422451. The reversal of 1304422431 is 1342244031.

It is not a de Polignac number, because 1304422431 - 26 = 1304422367 is a prime.

It is a super-2 number, since 2×13044224312 = 3403035756991899522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304422451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42501 + ... + 66446.

It is an arithmetic number, because the mean of its divisors is an integer number (117445944).

Almost surely, 21304422431 is an apocalyptic number.

1304422431 is a deficient number, since it is larger than the sum of its proper divisors (574712673).

1304422431 is a wasteful number, since it uses less digits than its factorization.

1304422431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109270.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1304422431 is about 36116.7887692137. The cubic root of 1304422431 is about 1092.6290745671.

Adding to 1304422431 its reverse (1342244031), we get a palindrome (2646666462).

The spelling of 1304422431 in words is "one billion, three hundred four million, four hundred twenty-two thousand, four hundred thirty-one".

Divisors: 1 3 13 39 307 921 3991 11973 108947 326841 1416311 4248933 33446729 100340187 434807477 1304422431