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2120101131 = 31697416441
BaseRepresentation
bin111111001011110…
…0010110100001011
312110202100022000010
41332113202310023
513320221214011
6550213043003
7103352363601
oct17627426413
95422308003
102120101131
119988183a5
124b2026463
1327a308315
141617dd871
15c61d81a6
hex7e5e2d0b

2120101131 has 8 divisors (see below), whose sum is σ = 2828474064. Its totient is φ = 1412564480.

The previous prime is 2120101099. The next prime is 2120101133. The reversal of 2120101131 is 1311010212.

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 2120101131 - 25 = 2120101099 is a prime.

It is a super-2 number, since 2×21201011312 = 8989657611334958322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2120101133) 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, 203130 + ... + 213311.

It is an arithmetic number, because the mean of its divisors is an integer number (353559258).

Almost surely, 22120101131 is an apocalyptic number.

2120101131 is a deficient number, since it is larger than the sum of its proper divisors (708372933).

2120101131 is a wasteful number, since it uses less digits than its factorization.

2120101131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418141.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 2120101131 is about 46044.5559322706. Note that the first 3 decimals coincide. The cubic root of 2120101131 is about 1284.6520844449.

Adding to 2120101131 its reverse (1311010212), we get a palindrome (3431111343).

The spelling of 2120101131 in words is "two billion, one hundred twenty million, one hundred one thousand, one hundred thirty-one".

Divisors: 1 3 1697 5091 416441 1249323 706700377 2120101131