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30230632431 = 331119653053
BaseRepresentation
bin11100001001111000…
…101101011111101111
32220000211021020121000
4130021320231133233
5443403020214211
621515431211343
72120100064416
oct341170553757
986024236530
1030230632431
111190344964a
125a38216b53
132b0a0b61ac
14166ad2247d
15bbded4656
hex709e2d7ef

30230632431 has 8 divisors (see below), whose sum is σ = 44786122160. Its totient is φ = 20153754936.

The previous prime is 30230632373. The next prime is 30230632441. The reversal of 30230632431 is 13423603203.

It is a happy number.

30230632431 is a `hidden beast` number, since 3 + 0 + 2 + 306 + 324 + 31 = 666.

It is not a de Polignac number, because 30230632431 - 27 = 30230632303 is a prime.

It is a super-2 number, since 2×302306324312 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1119653053 = 30230632431 / (3 + 0 + 2 + 3 + 0 + 6 + 3 + 2 + 4 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30230632395 and 30230632404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30230632441) 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, 559826500 + ... + 559826553.

It is an arithmetic number, because the mean of its divisors is an integer number (5598265270).

Almost surely, 230230632431 is an apocalyptic number.

30230632431 is a deficient number, since it is larger than the sum of its proper divisors (14555489729).

30230632431 is a wasteful number, since it uses less digits than its factorization.

30230632431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119653062 (or 1119653056 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

The spelling of 30230632431 in words is "thirty billion, two hundred thirty million, six hundred thirty-two thousand, four hundred thirty-one".

Divisors: 1 3 9 27 1119653053 3358959159 10076877477 30230632431