Search a number
-
+
31450024470 = 2355232004463
BaseRepresentation
bin11101010010100100…
…010100101000010110
310000011210202210000010
4131102210110220112
51003402201240340
622240431101050
72162234540304
oct352244245026
9100153683003
1031450024470
111237979a967
126118671786
132c7290a147
141744c5d274
15c410a0b80
hex752914a16

31450024470 has 32 divisors (see below), whose sum is σ = 75624417792. Its totient is φ = 8370633312.

The previous prime is 31450024423. The next prime is 31450024471. The reversal of 31450024470 is 7442005413.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31450024471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 986542 + ... + 1017921.

It is an arithmetic number, because the mean of its divisors is an integer number (2363263056).

Almost surely, 231450024470 is an apocalyptic number.

31450024470 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31450024470 is an abundant number, since it is smaller than the sum of its proper divisors (44174393322).

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

31450024470 is a wasteful number, since it uses less digits than its factorization.

31450024470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004996.

The product of its (nonzero) digits is 13440, while the sum is 30.

Adding to 31450024470 its reverse (7442005413), we get a palindrome (38892029883).

The spelling of 31450024470 in words is "thirty-one billion, four hundred fifty million, twenty-four thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 523 1046 1569 2615 3138 5230 7845 15690 2004463 4008926 6013389 10022315 12026778 20044630 30066945 60133890 1048334149 2096668298 3145002447 5241670745 6290004894 10483341490 15725012235 31450024470