Search a number
-
+
30051137137 = 72613288513
BaseRepresentation
bin11011111111001011…
…111111011001110001
32212120022111221100011
4123333023333121301
5443021042342022
621445540054521
72112460310500
oct337713773161
985508457304
1030051137137
11118210a112a
1259a8094441
132aabb5ac68
14165115a837
15bad37a977
hex6ff2ff671

30051137137 has 6 divisors (see below), whose sum is σ = 34957445298. Its totient is φ = 25758117504.

The previous prime is 30051137131. The next prime is 30051137299. The reversal of 30051137137 is 73173115003.

It can be written as a sum of positive squares in only one way, i.e., 17518110736 + 12533026401 = 132356^2 + 111951^2 .

It is a de Polignac number, because none of the positive numbers 2k-30051137137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30051137099 and 30051137108.

It is not an unprimeable number, because it can be changed into a prime (30051137131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306644208 + ... + 306644305.

It is an arithmetic number, because the mean of its divisors is an integer number (5826240883).

Almost surely, 230051137137 is an apocalyptic number.

It is an amenable number.

30051137137 is a deficient number, since it is larger than the sum of its proper divisors (4906308161).

30051137137 is an equidigital number, since it uses as much as digits as its factorization.

30051137137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613288527 (or 613288520 counting only the distinct ones).

The product of its (nonzero) digits is 6615, while the sum is 31.

The spelling of 30051137137 in words is "thirty billion, fifty-one million, one hundred thirty-seven thousand, one hundred thirty-seven".

Divisors: 1 7 49 613288513 4293019591 30051137137