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30152153431 = 83363278957
BaseRepresentation
bin11100000101001101…
…010101100101010111
32212211100121002122101
4130011031111211113
5443222422402211
621503545142531
72115125034601
oct340515254527
985740532571
1030152153431
1111873117174
125a15a8aa47
132ac6a6920a
141660734171
15bb71815c1
hex705355957

30152153431 has 4 divisors (see below), whose sum is σ = 30515432472. Its totient is φ = 29788874392.

The previous prime is 30152153401. The next prime is 30152153501. The reversal of 30152153431 is 13435125103.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13435125103 = 46512888653.

It is a cyclic number.

It is not a de Polignac number, because 30152153431 - 25 = 30152153399 is a prime.

It is a super-2 number, since 2×301521534312 (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 30152153431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30152153401) 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, 181639396 + ... + 181639561.

It is an arithmetic number, because the mean of its divisors is an integer number (7628858118).

Almost surely, 230152153431 is an apocalyptic number.

30152153431 is a deficient number, since it is larger than the sum of its proper divisors (363279041).

30152153431 is an equidigital number, since it uses as much as digits as its factorization.

30152153431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363279040.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 30152153431 its reverse (13435125103), we get a palindrome (43587278534).

The spelling of 30152153431 in words is "thirty billion, one hundred fifty-two million, one hundred fifty-three thousand, four hundred thirty-one".

Divisors: 1 83 363278957 30152153431