Search a number
-
+
31707441020 = 2254138667611
BaseRepresentation
bin11101100001111010…
…010010011101111100
310000211202010220010102
4131201322102131330
51004414101103040
622322144300232
72201511542003
oct354172223574
9100752126112
1031707441020
11124a1029812
12618a911678
132cb4048528
14176b109c3a
15c5899c515
hex761e9277c

31707441020 has 24 divisors (see below), whose sum is σ = 68209667568. Its totient is φ = 12373635200.

The previous prime is 31707441001. The next prime is 31707441071. The reversal of 31707441020 is 2014470713.

It is a congruent number.

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, 19332986 + ... + 19334625.

It is an arithmetic number, because the mean of its divisors is an integer number (2842069482).

Almost surely, 231707441020 is an apocalyptic number.

It is an amenable number.

31707441020 is an abundant number, since it is smaller than the sum of its proper divisors (36502226548).

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

31707441020 is a wasteful number, since it uses less digits than its factorization.

31707441020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38667661 (or 38667659 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The spelling of 31707441020 in words is "thirty-one billion, seven hundred seven million, four hundred forty-one thousand, twenty".

Divisors: 1 2 4 5 10 20 41 82 164 205 410 820 38667611 77335222 154670444 193338055 386676110 773352220 1585372051 3170744102 6341488204 7926860255 15853720510 31707441020