Search a number
-
+
30131022140 = 2251506551107
BaseRepresentation
bin11100000011111100…
…101110100100111100
32212202212211111221222
4130003330232210330
5443202020202030
621501512212512
72114450314412
oct340374564474
985685744858
1030131022140
11118621a399a
125a0a99a138
132ac257abab
14165b9d32b2
15bb53aa3e5
hex703f2e93c

30131022140 has 12 divisors (see below), whose sum is σ = 63275146536. Its totient is φ = 12052408848.

The previous prime is 30131022101. The next prime is 30131022151. The reversal of 30131022140 is 4122013103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753275534 + ... + 753275573.

It is an arithmetic number, because the mean of its divisors is an integer number (5272928878).

Almost surely, 230131022140 is an apocalyptic number.

It is an amenable number.

30131022140 is an abundant number, since it is smaller than the sum of its proper divisors (33144124396).

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

30131022140 is a wasteful number, since it uses less digits than its factorization.

30131022140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506551116 (or 1506551114 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 30131022140 its reverse (4122013103), we get a palindrome (34253035243).

The spelling of 30131022140 in words is "thirty billion, one hundred thirty-one million, twenty-two thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 1506551107 3013102214 6026204428 7532755535 15065511070 30131022140