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30421241431 = 723983921673
BaseRepresentation
bin11100010101001111…
…110100111001010111
32220112002221011222121
4130111033310321113
5444300314211211
621550400440411
72124603166660
oct342517647127
986462834877
1030421241431
11119a0aa7a49
125a90019107
132b3a732b99
14168837c367
15bd0ad6271
hex7153f4e57

30421241431 has 16 divisors (see below), whose sum is σ = 34955827200. Its totient is φ = 25934102208.

The previous prime is 30421241401. The next prime is 30421241437. The reversal of 30421241431 is 13414212403.

It is not a de Polignac number, because 30421241431 - 213 = 30421233239 is a prime.

It is a super-2 number, since 2×304212414312 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30421241396 and 30421241405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30421241437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1392811 + ... + 1414483.

It is an arithmetic number, because the mean of its divisors is an integer number (2184739200).

Almost surely, 230421241431 is an apocalyptic number.

30421241431 is a deficient number, since it is larger than the sum of its proper divisors (4534585769).

30421241431 is a wasteful number, since it uses less digits than its factorization.

30421241431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22758.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 30421241431 its reverse (13414212403), we get a palindrome (43835453834).

The spelling of 30421241431 in words is "thirty billion, four hundred twenty-one million, two hundred forty-one thousand, four hundred thirty-one".

Divisors: 1 7 239 839 1673 5873 21673 151711 200521 1403647 5179847 18183647 36258929 127285529 4345891633 30421241431