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30421524351 = 310140508117
BaseRepresentation
bin11100010101010000…
…111001111101111111
32220112010110120002010
4130111100321331333
5444300402234401
621550410502303
72124605455551
oct342520717577
986463416063
1030421524351
11119a1180569
125a90134993
132b3a8018aa
1416884134d1
15bd0b3eed6
hex715439f7f

30421524351 has 4 divisors (see below), whose sum is σ = 40562032472. Its totient is φ = 20281016232.

The previous prime is 30421524337. The next prime is 30421524391. The reversal of 30421524351 is 15342512403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15342512403 = 35114170801.

It is not a de Polignac number, because 30421524351 - 27 = 30421524223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30421524391) 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, 5070254056 + ... + 5070254061.

It is an arithmetic number, because the mean of its divisors is an integer number (10140508118).

Almost surely, 230421524351 is an apocalyptic number.

30421524351 is a deficient number, since it is larger than the sum of its proper divisors (10140508121).

30421524351 is a wasteful number, since it uses less digits than its factorization.

30421524351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10140508120.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 30421524351 in words is "thirty billion, four hundred twenty-one million, five hundred twenty-four thousand, three hundred fifty-one".

Divisors: 1 3 10140508117 30421524351