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51234031 = 191313857
BaseRepresentation
bin1100001101110…
…0010011101111
310120101221212201
43003130103233
5101103442111
65030042331
71161324232
oct303342357
9116357781
1051234031
1126a13982
12151a93a7
13a7cacc4
146b39419
1547706c1
hex30dc4ef

51234031 has 8 divisors (see below), whose sum is σ = 51727104. Its totient is φ = 50743680.

The previous prime is 51234019. The next prime is 51234047. The reversal of 51234031 is 13043215.

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 51234031 - 25 = 51233999 is a prime.

It is a super-2 number, since 2×512340312 = 5249851865017922, 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 (51234091) 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, 59355 + ... + 60211.

It is an arithmetic number, because the mean of its divisors is an integer number (6465888).

Almost surely, 251234031 is an apocalyptic number.

51234031 is a deficient number, since it is larger than the sum of its proper divisors (493073).

51234031 is a wasteful number, since it uses less digits than its factorization.

51234031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 51234031 is about 7157.7951214044. The cubic root of 51234031 is about 371.4093582130.

Adding to 51234031 its reverse (13043215), we get a palindrome (64277246).

It can be divided in two parts, 512 and 34031, that added together give a palindrome (34543).

The spelling of 51234031 in words is "fifty-one million, two hundred thirty-four thousand, thirty-one".

Divisors: 1 191 313 857 59783 163687 268241 51234031