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231312307157147 = 2573972267123143
BaseRepresentation
bin110100100110000010010111…
…111001100111100010011011
31010100000020111101202122000202
4310212002113321213202123
5220304310101113012042
62135543223521252415
766502522414551146
oct6446022771474233
91110006441678022
10231312307157147
1167780aa90aa947
1221b39a5b79410b
139c0b870492768
14411980ac9105d
151bb1e6d483632
hexd26097e6789b

231312307157147 has 8 divisors (see below), whose sum is σ = 232797272918496. Its totient is φ = 229831875643392.

The previous prime is 231312307157131. The next prime is 231312307157203. The reversal of 231312307157147 is 741751703213132.

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 231312307157147 - 24 = 231312307157131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231312207157147) 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, 1133459543 + ... + 1133663600.

It is an arithmetic number, because the mean of its divisors is an integer number (29099659114812).

Almost surely, 2231312307157147 is an apocalyptic number.

231312307157147 is a deficient number, since it is larger than the sum of its proper divisors (1484965761349).

231312307157147 is a wasteful number, since it uses less digits than its factorization.

231312307157147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267123797.

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 231312307157147 in words is "two hundred thirty-one trillion, three hundred twelve billion, three hundred seven million, one hundred fifty-seven thousand, one hundred forty-seven".

Divisors: 1 257 397 102029 2267123143 582650647751 900047887771 231312307157147