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30470602121 = 123772461873
BaseRepresentation
bin11100011000001100…
…000111110110001001
32220122112210222010022
4130120030013312021
5444400433231441
621555322430225
72126042562461
oct343014076611
986575728108
1030470602121
1111a16951403
125aa4662375
132b47a262ab
141690b4aba1
15bd50d684b
hex718307d89

30470602121 has 4 divisors (see below), whose sum is σ = 30473076372. Its totient is φ = 30468127872.

The previous prime is 30470602091. The next prime is 30470602153. The reversal of 30470602121 is 12120607403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12120607403 = 28514251353.

It can be written as a sum of positive squares in 2 ways, for example, as 19332121600 + 11138480521 = 139040^2 + 105539^2 .

It is a cyclic number.

It is not a de Polignac number, because 30470602121 - 234 = 13290732937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30470604121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1218560 + ... + 1243313.

It is an arithmetic number, because the mean of its divisors is an integer number (7618269093).

Almost surely, 230470602121 is an apocalyptic number.

It is an amenable number.

30470602121 is a deficient number, since it is larger than the sum of its proper divisors (2474251).

30470602121 is a wasteful number, since it uses less digits than its factorization.

30470602121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2474250.

The product of its (nonzero) digits is 2016, while the sum is 26.

The spelling of 30470602121 in words is "thirty billion, four hundred seventy million, six hundred two thousand, one hundred twenty-one".

Divisors: 1 12377 2461873 30470602121