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30131442001253 = 191585865368487
BaseRepresentation
bin1101101100111100001011…
…11001011010010101100101
310221200112112000000020221202
412312132011321122111211
512422133143123020003
6144030105433252245
76226632136100645
oct666360571322545
9127615460006852
1030131442001253
11966774453705a
123467812b64085
1313a74c8ca9c58
1476252617c525
15373bc452c088
hex1b6785e5a565

30131442001253 has 4 divisors (see below), whose sum is σ = 31717307369760. Its totient is φ = 28545576632748.

The previous prime is 30131442001249. The next prime is 30131442001301. The reversal of 30131442001253 is 35210024413103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30131442001253 - 22 = 30131442001249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30131442081253) 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, 792932684225 + ... + 792932684262.

It is an arithmetic number, because the mean of its divisors is an integer number (7929326842440).

Almost surely, 230131442001253 is an apocalyptic number.

It is an amenable number.

30131442001253 is a deficient number, since it is larger than the sum of its proper divisors (1585865368507).

30131442001253 is a wasteful number, since it uses less digits than its factorization.

30131442001253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585865368506.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 30131442001253 its reverse (35210024413103), we get a palindrome (65341466414356).

The spelling of 30131442001253 in words is "thirty trillion, one hundred thirty-one billion, four hundred forty-two million, one thousand, two hundred fifty-three".

Divisors: 1 19 1585865368487 30131442001253