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3121122023 = 109191197761
BaseRepresentation
bin1011101000001000…
…1000101011100111
322001111221102111222
42322002020223213
522343001401043
61233412250555
7140226046055
oct27202105347
98044842458
103121122023
111361879198
12731310a5b
133a9812086
142187351d5
1513401bd68
hexba088ae7

3121122023 has 16 divisors (see below), whose sum is σ = 3186501120. Its totient is φ = 3056659200.

The previous prime is 3121121981. The next prime is 3121122031. The reversal of 3121122023 is 3202211213.

It is a cyclic number.

It is not a de Polignac number, because 3121122023 - 26 = 3121121959 is a prime.

It is a super-2 number, since 2×31211220232 = 19482805364911225058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121121992 and 3121122010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121122073) 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, 4100963 + ... + 4101723.

It is an arithmetic number, because the mean of its divisors is an integer number (199156320).

Almost surely, 23121122023 is an apocalyptic number.

3121122023 is a deficient number, since it is larger than the sum of its proper divisors (65379097).

3121122023 is a wasteful number, since it uses less digits than its factorization.

3121122023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3121122023 is about 55867.0029892422. The cubic root of 3121122023 is about 1461.4038575185.

Adding to 3121122023 its reverse (3202211213), we get a palindrome (6323333236).

The spelling of 3121122023 in words is "three billion, one hundred twenty-one million, one hundred twenty-two thousand, twenty-three".

Divisors: 1 109 191 197 761 20819 21473 37627 82949 145351 149917 4101343 15843259 16340953 28634147 3121122023