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2203131031 = 171108711689
BaseRepresentation
bin1000001101010001…
…0001110010010111
312200112120122121121
42003110101302113
514003000143111
61002340424411
7105411206353
oct20324216227
95615518547
102203131031
11a30678a52
125159a8107
1329158983a
1416c854463
15cd639871
hex83511c97

2203131031 has 8 divisors (see below), whose sum is σ = 2333136960. Its totient is φ = 2073170688.

The previous prime is 2203131019. The next prime is 2203131041. The reversal of 2203131031 is 1301313022.

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 2203131031 - 213 = 2203122839 is a prime.

It is a super-2 number, since 2×22031310312 = 9707572679510245922, 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 = 2203130996 and 2203131014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2203131011) 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, 182635 + ... + 194323.

It is an arithmetic number, because the mean of its divisors is an integer number (291642120).

Almost surely, 22203131031 is an apocalyptic number.

2203131031 is a deficient number, since it is larger than the sum of its proper divisors (130005929).

2203131031 is a wasteful number, since it uses less digits than its factorization.

2203131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22793.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2203131031 is about 46937.5226338161. The cubic root of 2203131031 is about 1301.2081531881.

Adding to 2203131031 its reverse (1301313022), we get a palindrome (3504444053).

The spelling of 2203131031 in words is "two billion, two hundred three million, one hundred thirty-one thousand, thirty-one".

Divisors: 1 17 11087 11689 188479 198713 129595943 2203131031