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312100032113 = 1951159969263
BaseRepresentation
bin1001000101010101001…
…11001000111001110001
31002211120210021100100122
410202222213020321301
520103140102011423
6355213214500025
731356062334032
oct4425247107161
91084523240318
10312100032113
111103a7371541
12505a1804615
132357a91871c
141116a15ca89
1581b9add8c8
hex48aa9c8e71

312100032113 has 4 divisors (see below), whose sum is σ = 312260003328. Its totient is φ = 311940060900.

The previous prime is 312100032077. The next prime is 312100032121. The reversal of 312100032113 is 311230001213.

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, and also an emirpimes, since its reverse is a distinct semiprime: 311230001213 = 1367227673739.

It is a cyclic number.

It is not a de Polignac number, because 312100032113 - 212 = 312100028017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 312100032091 and 312100032100.

It is not an unprimeable number, because it can be changed into a prime (312100032193) 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, 79982681 + ... + 79986582.

It is an arithmetic number, because the mean of its divisors is an integer number (78065000832).

Almost surely, 2312100032113 is an apocalyptic number.

It is an amenable number.

312100032113 is a deficient number, since it is larger than the sum of its proper divisors (159971215).

312100032113 is a wasteful number, since it uses less digits than its factorization.

312100032113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159971214.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 312100032113 its reverse (311230001213), we get a palindrome (623330033326).

The spelling of 312100032113 in words is "three hundred twelve billion, one hundred million, thirty-two thousand, one hundred thirteen".

Divisors: 1 1951 159969263 312100032113