Search a number
-
+
31014109252 = 2271517335409
BaseRepresentation
bin11100111000100101…
…011100000001000100
32222001102111222202001
4130320211130001010
51002004102444002
622125255555044
72145362402410
oct347045340104
988042458661
1031014109252
1112175724355
12601668ba84
132c03502349
141702dc9d40
15c17b95a87
hex73895c044

31014109252 has 24 divisors (see below), whose sum is σ = 62439009920. Its totient is φ = 13203734400.

The previous prime is 31014109223. The next prime is 31014109283. The reversal of 31014109252 is 25290141013.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 31014109252.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3663477 + ... + 3671932.

Almost surely, 231014109252 is an apocalyptic number.

It is an amenable number.

31014109252 is an abundant number, since it is smaller than the sum of its proper divisors (31424900668).

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

31014109252 is a wasteful number, since it uses less digits than its factorization.

31014109252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7335571 (or 7335569 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 31014109252 in words is "thirty-one billion, fourteen million, one hundred nine thousand, two hundred fifty-two".

Divisors: 1 2 4 7 14 28 151 302 604 1057 2114 4228 7335409 14670818 29341636 51347863 102695726 205391452 1107646759 2215293518 4430587036 7753527313 15507054626 31014109252