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31310130120053 = 283110636502191
BaseRepresentation
bin1110001111001111101010…
…01011110000010101110101
311002212012220210122121222212
413013213311023300111311
513100441121302320203
6150331401502303205
76411040132563401
oct707476513602565
9132765823577885
1031310130120053
119a81608221394
123618143287b05
1314616c0182165
147a35c008a101
153946ad2111d8
hex1c79f52f0575

31310130120053 has 4 divisors (see below), whose sum is σ = 31420766622528. Its totient is φ = 31199493617580.

The previous prime is 31310130120023. The next prime is 31310130120089. The reversal of 31310130120053 is 35002103101313.

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 31310130120053 - 210 = 31310130119029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31310130120023) 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, 55318250813 + ... + 55318251378.

It is an arithmetic number, because the mean of its divisors is an integer number (7855191655632).

Almost surely, 231310130120053 is an apocalyptic number.

It is an amenable number.

31310130120053 is a deficient number, since it is larger than the sum of its proper divisors (110636502475).

31310130120053 is a wasteful number, since it uses less digits than its factorization.

31310130120053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110636502474.

The product of its (nonzero) digits is 810, while the sum is 23.

Adding to 31310130120053 its reverse (35002103101313), we get a palindrome (66312233221366).

The spelling of 31310130120053 in words is "thirty-one trillion, three hundred ten billion, one hundred thirty million, one hundred twenty thousand, fifty-three".

Divisors: 1 283 110636502191 31310130120053