Search a number
-
+
31107471054 = 2311471325319
BaseRepresentation
bin11100111110001001…
…100101011011001110
32222021221012021001120
4130332021211123032
51002202003033204
622142433021410
72150605066302
oct347611453316
988257167046
1031107471054
11122133a1470
1260419b4866
132c1996050a
14171156dd02
15c20e886d9
hex73e2656ce

31107471054 has 16 divisors (see below), whose sum is σ = 67870846080. Its totient is φ = 9426506360.

The previous prime is 31107471053. The next prime is 31107471067. The reversal of 31107471054 is 45017470113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31107471053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235662594 + ... + 235662725.

It is an arithmetic number, because the mean of its divisors is an integer number (4241927880).

Almost surely, 231107471054 is an apocalyptic number.

31107471054 is an abundant number, since it is smaller than the sum of its proper divisors (36763375026).

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

31107471054 is a wasteful number, since it uses less digits than its factorization.

31107471054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471325335.

The product of its (nonzero) digits is 11760, while the sum is 33.

The spelling of 31107471054 in words is "thirty-one billion, one hundred seven million, four hundred seventy-one thousand, fifty-four".

Divisors: 1 2 3 6 11 22 33 66 471325319 942650638 1413975957 2827951914 5184578509 10369157018 15553735527 31107471054