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2231031001 = 13117030771
BaseRepresentation
bin1000010011111010…
…1101010011011001
312202111002010011211
42010332231103121
514032120443001
61005214423121
7106200310363
oct20476552331
95674063154
102231031001
11a453a4681
12523201aa1
132972a79b4
14172437d33
15d0ceb351
hex84fad4d9

2231031001 has 4 divisors (see below), whose sum is σ = 2248061904. Its totient is φ = 2214000100.

The previous prime is 2231030969. The next prime is 2231031013. The reversal of 2231031001 is 1001301322.

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.

It is a cyclic number.

It is not a de Polignac number, because 2231031001 - 25 = 2231030969 is a prime.

It is a super-3 number, since 3×22310310013 (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2231011001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8515255 + ... + 8515516.

It is an arithmetic number, because the mean of its divisors is an integer number (562015476).

Almost surely, 22231031001 is an apocalyptic number.

It is an amenable number.

2231031001 is a deficient number, since it is larger than the sum of its proper divisors (17030903).

2231031001 is a wasteful number, since it uses less digits than its factorization.

2231031001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17030902.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2231031001 is about 47233.7908811054. The cubic root of 2231031001 is about 1306.6778672495.

Adding to 2231031001 its reverse (1001301322), we get a palindrome (3232332323).

The spelling of 2231031001 in words is "two billion, two hundred thirty-one million, thirty-one thousand, one".

Divisors: 1 131 17030771 2231031001