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54020431031 = 747470334913
BaseRepresentation
bin110010010011110111…
…100101110010110111
312011102202222020011212
4302103313211302313
51341113212243111
640452221152035
73621451042010
oct622367456267
9164382866155
1054020431031
1120a01141426
12a5773bb61b
13512b995ab8
142886682007
15161280398b
hexc93de5cb7

54020431031 has 16 divisors (see below), whose sum is σ = 63066415104. Its totient is φ = 45307117824.

The previous prime is 54020431027. The next prime is 54020431033. The reversal of 54020431031 is 13013402045.

It is a cyclic number.

It is not a de Polignac number, because 54020431031 - 22 = 54020431027 is a prime.

It is a super-2 number, since 2×540204310312 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54020430988 and 54020431006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54020431033) 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, 1529831 + ... + 1564743.

It is an arithmetic number, because the mean of its divisors is an integer number (3941650944).

Almost surely, 254020431031 is an apocalyptic number.

54020431031 is a deficient number, since it is larger than the sum of its proper divisors (9045984073).

54020431031 is a wasteful number, since it uses less digits than its factorization.

54020431031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39670.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 54020431031 its reverse (13013402045), we get a palindrome (67033833076).

The spelling of 54020431031 in words is "fifty-four billion, twenty million, four hundred thirty-one thousand, thirty-one".

Divisors: 1 7 47 329 4703 32921 34913 221041 244391 1547287 1640911 11486377 164195839 1149370873 7717204433 54020431031