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30031310130 = 2351973721733
BaseRepresentation
bin11011111110000000…
…010110110100110010
32212111221012121210120
4123332000112310302
5443001003411010
621443551111110
72112126632013
oct337600266462
985457177716
1030031310130
1111810989878
1259a1512496
132aa7a084c3
14164c67900a
15bab760e70
hex6fe016d32

30031310130 has 64 divisors (see below), whose sum is σ = 76907975040. Its totient is φ = 7482917376.

The previous prime is 30031310117. The next prime is 30031310131. The reversal of 30031310130 is 3101313003.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (30031310131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 319257 + ... + 402476.

It is an arithmetic number, because the mean of its divisors is an integer number (1201687110).

Almost surely, 230031310130 is an apocalyptic number.

30031310130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30031310130 is an abundant number, since it is smaller than the sum of its proper divisors (46876664910).

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

30031310130 is a wasteful number, since it uses less digits than its factorization.

30031310130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721835.

The product of its (nonzero) digits is 81, while the sum is 15.

Adding to 30031310130 its reverse (3101313003), we get a palindrome (33132623133).

The spelling of 30031310130 in words is "thirty billion, thirty-one million, three hundred ten thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 19 30 38 57 73 95 114 146 190 219 285 365 438 570 730 1095 1387 2190 2774 4161 6935 8322 13870 20805 41610 721733 1443466 2165199 3608665 4330398 7217330 10825995 13712927 21651990 27425854 41138781 52686509 68564635 82277562 105373018 137129270 158059527 205693905 263432545 316119054 411387810 526865090 790297635 1001043671 1580595270 2002087342 3003131013 5005218355 6006262026 10010436710 15015655065 30031310130