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31458900057 = 3131847436729
BaseRepresentation
bin11101010011000110…
…001011100001011001
310000012102110201000120
4131103012023201121
51003411434300212
622241345223453
72162403144534
oct352306134131
9100172421016
1031458900057
1112383802262
12611b631b89
132c746c6c80
1417460cda1b
15c41c5588c
hex75318b859

31458900057 has 16 divisors (see below), whose sum is σ = 45196314240. Its totient is φ = 19348797312.

The previous prime is 31458900047. The next prime is 31458900073. The reversal of 31458900057 is 75000985413.

It is not a de Polignac number, because 31458900057 - 212 = 31458895961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31458899991 and 31458900018.

It is not an unprimeable number, because it can be changed into a prime (31458900047) 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 15 ways as a sum of consecutive naturals, for example, 146332 + ... + 290397.

It is an arithmetic number, because the mean of its divisors is an integer number (2824769640).

Almost surely, 231458900057 is an apocalyptic number.

It is an amenable number.

31458900057 is a deficient number, since it is larger than the sum of its proper divisors (13737414183).

31458900057 is a wasteful number, since it uses less digits than its factorization.

31458900057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438592.

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 31458900057 in words is "thirty-one billion, four hundred fifty-eight million, nine hundred thousand, fifty-seven".

Divisors: 1 3 13 39 1847 5541 24011 72033 436729 1310187 5677477 17032431 806638463 2419915389 10486300019 31458900057