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30015542431 = 717252231449
BaseRepresentation
bin11011111101000100…
…001101010010011111
32212110211112112120201
4123331010031102133
5442432434324211
621442225124331
72111545621030
oct337504152237
985424475521
1030015542431
1111802a9a316
1259981896a7
132aa46775c4
14164a532a87
15baa1990c1
hex6fd10d49f

30015542431 has 8 divisors (see below), whose sum is σ = 36321328800. Its totient is φ = 24214219008.

The previous prime is 30015542423. The next prime is 30015542497. The reversal of 30015542431 is 13424551003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30015542431 - 23 = 30015542423 is a prime.

It is a super-2 number, since 2×300155424312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30015542431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30015542411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126115606 + ... + 126115843.

It is an arithmetic number, because the mean of its divisors is an integer number (4540166100).

Almost surely, 230015542431 is an apocalyptic number.

30015542431 is a deficient number, since it is larger than the sum of its proper divisors (6305786369).

30015542431 is a wasteful number, since it uses less digits than its factorization.

30015542431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252231473.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 30015542431 in words is "thirty billion, fifteen million, five hundred forty-two thousand, four hundred thirty-one".

Divisors: 1 7 17 119 252231449 1765620143 4287934633 30015542431