Search a number
-
+
31454300544 = 27381912241
BaseRepresentation
bin11101010010110100…
…101000100110000000
310000012002211000200020
4131102310220212000
51003404300104134
622241102453440
72162316100062
oct352264504600
9100162730606
1031454300544
1112381150607
126119b94280
132c73776574
141745653732
15c41647b49
hex752d28980

31454300544 has 32 divisors (see below), whose sum is σ = 83550486840. Its totient is φ = 10484766720.

The previous prime is 31454300503. The next prime is 31454300569. The reversal of 31454300544 is 44500345413.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40955737 + ... + 40956504.

Almost surely, 231454300544 is an apocalyptic number.

It is an amenable number.

31454300544 is an abundant number, since it is smaller than the sum of its proper divisors (52096186296).

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

31454300544 is an equidigital number, since it uses as much as digits as its factorization.

31454300544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81912258 (or 81912246 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 31454300544 its reverse (44500345413), we get a palindrome (75954645957).

The spelling of 31454300544 in words is "thirty-one billion, four hundred fifty-four million, three hundred thousand, five hundred forty-four".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 64 96 128 192 384 81912241 163824482 245736723 327648964 491473446 655297928 982946892 1310595856 1965893784 2621191712 3931787568 5242383424 7863575136 10484766848 15727150272 31454300544