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11230303031 = 95189117979
BaseRepresentation
bin10100111010110000…
…01101001100110111
31001222122210111121022
422131120031030313
5140444424144111
65054212211355
7545204000153
oct123530151467
931878714538
1011230303031
114843238982
122215009b5b
13109c86182c
14787700063
1545add22db
hex29d60d337

11230303031 has 4 divisors (see below), whose sum is σ = 11230516200. Its totient is φ = 11230089864.

The previous prime is 11230302961. The next prime is 11230303057. The reversal of 11230303031 is 13030303211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13030303211 = 44329413777.

It is a cyclic number.

It is not a de Polignac number, because 11230303031 - 210 = 11230302007 is a prime.

It is a super-2 number, since 2×112303030312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11230363031) 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, 36200 + ... + 154178.

It is an arithmetic number, because the mean of its divisors is an integer number (2807629050).

Almost surely, 211230303031 is an apocalyptic number.

11230303031 is a deficient number, since it is larger than the sum of its proper divisors (213169).

11230303031 is an equidigital number, since it uses as much as digits as its factorization.

11230303031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213168.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 11230303031 its reverse (13030303211), we get a palindrome (24260606242).

The spelling of 11230303031 in words is "eleven billion, two hundred thirty million, three hundred three thousand, thirty-one".

Divisors: 1 95189 117979 11230303031