Search a number
-
+
31451519034 = 23213281478321
BaseRepresentation
bin11101010010101010…
…000001100000111010
310000011220120201011100
4131102222001200322
51003403042102114
622240523112230
72162253333525
oct352252014072
9100156521140
1031451519034
111237a620841
126119072676
132c730114c0
14174512bbbc
15c41298909
hex752a8183a

31451519034 has 48 divisors (see below), whose sum is σ = 73648194984. Its totient is φ = 9642931200.

The previous prime is 31451519017. The next prime is 31451519039. The reversal of 31451519034 is 43091515413.

It can be written as a sum of positive squares in 4 ways, for example, as 30302105625 + 1149413409 = 174075^2 + 33903^2 .

It is a super-3 number, since 3×314515190343 (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31451519034.

It is not an unprimeable number, because it can be changed into a prime (31451519039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173407 + ... + 304914.

Almost surely, 231451519034 is an apocalyptic number.

31451519034 is an abundant number, since it is smaller than the sum of its proper divisors (42196675950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31451519034 is a wasteful number, since it uses less digits than its factorization.

31451519034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478623 (or 478620 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 31451519034 in words is "thirty-one billion, four hundred fifty-one million, five hundred nineteen thousand, thirty-four".

Divisors: 1 2 3 6 9 13 18 26 39 78 117 234 281 562 843 1686 2529 3653 5058 7306 10959 21918 32877 65754 478321 956642 1434963 2869926 4304889 6218173 8609778 12436346 18654519 37309038 55963557 111927114 134408201 268816402 403224603 806449206 1209673809 1747306613 2419347618 3494613226 5241919839 10483839678 15725759517 31451519034