Search a number
-
+
31488909060 = 22357316833541
BaseRepresentation
bin11101010100111000…
…101001111100000100
310000021111221022122010
4131110320221330010
51003442130042220
622244340334220
72163216211410
oct352470517404
9100244838563
1031488909060
1112399739494
1261296a4370
132c7a9a308b
14174a0a1d40
15c446d21e0
hex754e29f04

31488909060 has 192 divisors, whose sum is σ = 104196685824. Its totient is φ = 6953126400.

The previous prime is 31488909041. The next prime is 31488909061. The reversal of 31488909060 is 6090988413.

It is not an unprimeable number, because it can be changed into a prime (31488909061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8890890 + ... + 8894430.

It is an arithmetic number, because the mean of its divisors is an integer number (542691072).

Almost surely, 231488909060 is an apocalyptic number.

31488909060 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31488909060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52098342912).

31488909060 is an abundant number, since it is smaller than the sum of its proper divisors (72707776764).

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

31488909060 is a wasteful number, since it uses less digits than its factorization.

31488909060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274 (or 4272 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 31488909060 in words is "thirty-one billion, four hundred eighty-eight million, nine hundred nine thousand, sixty".