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22203130031 = 31716230001
BaseRepresentation
bin10100101011011010…
…001110000010101111
32010022101002212111022
4110223122032002233
5330433000130111
614111110044355
71414133330345
oct245332160257
963271085438
1022203130031
1194640a7245
1243779496bb
13212ac63b84
141108b39995
1589e3a52db
hex52b68e0af

22203130031 has 4 divisors (see below), whose sum is σ = 22919360064. Its totient is φ = 21486900000.

The previous prime is 22203129997. The next prime is 22203130039. The reversal of 22203130031 is 13003130222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13003130222 = 26501565111.

It is a cyclic number.

It is not a de Polignac number, because 22203130031 - 26 = 22203129967 is a prime.

It is a super-2 number, since 2×222031300312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22203129991 and 22203130009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22203130039) 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, 358114970 + ... + 358115031.

It is an arithmetic number, because the mean of its divisors is an integer number (5729840016).

Almost surely, 222203130031 is an apocalyptic number.

22203130031 is a deficient number, since it is larger than the sum of its proper divisors (716230033).

22203130031 is an equidigital number, since it uses as much as digits as its factorization.

22203130031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716230032.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 22203130031 its reverse (13003130222), we get a palindrome (35206260253).

The spelling of 22203130031 in words is "twenty-two billion, two hundred three million, one hundred thirty thousand, thirty-one".

Divisors: 1 31 716230001 22203130031