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30431141431 = 176129345363
BaseRepresentation
bin11100010101110101…
…100101111000110111
32220112210120011020021
4130111311211320313
5444310333011211
621551352550011
72125053301645
oct342565457067
986483504207
1030431141431
11119a6649a69
125a933b2307
132b3c7bb082
1416897d8195
15bd18de771
hex715d65e37

30431141431 has 8 divisors (see below), whose sum is σ = 32749426224. Its totient is φ = 28171547520.

The previous prime is 30431141407. The next prime is 30431141479. The reversal of 30431141431 is 13414113403.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 30431141431 - 29 = 30431140919 is a prime.

It is a super-2 number, since 2×304311414312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30431141396 and 30431141405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30431141731) 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, 14671645 + ... + 14673718.

It is an arithmetic number, because the mean of its divisors is an integer number (4093678278).

Almost surely, 230431141431 is an apocalyptic number.

30431141431 is a deficient number, since it is larger than the sum of its proper divisors (2318284793).

30431141431 is a wasteful number, since it uses less digits than its factorization.

30431141431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29345441.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 30431141431 its reverse (13414113403), we get a palindrome (43845254834).

The spelling of 30431141431 in words is "thirty billion, four hundred thirty-one million, one hundred forty-one thousand, four hundred thirty-one".

Divisors: 1 17 61 1037 29345363 498871171 1790067143 30431141431