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10231031231 = 59173407309
BaseRepresentation
bin10011000011101000…
…10010010110111111
3222102000111020101122
421201310102112333
5131423120444411
64411114301155
7511351221251
oct114164222677
928360436348
1010231031231
114380172213
121b964277bb
13c7081ac45
146d0b01cd1
153ed2e69db
hex261d125bf

10231031231 has 4 divisors (see below), whose sum is σ = 10404438600. Its totient is φ = 10057623864.

The previous prime is 10231031219. The next prime is 10231031233. The reversal of 10231031231 is 13213013201.

10231031231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10231031231 is a prime.

It is a super-2 number, since 2×102310312312 (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 (10231031233) 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, 86703596 + ... + 86703713.

It is an arithmetic number, because the mean of its divisors is an integer number (2601109650).

Almost surely, 210231031231 is an apocalyptic number.

10231031231 is a deficient number, since it is larger than the sum of its proper divisors (173407369).

10231031231 is an equidigital number, since it uses as much as digits as its factorization.

10231031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173407368.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 10231031231 its reverse (13213013201), we get a palindrome (23444044432).

The spelling of 10231031231 in words is "ten billion, two hundred thirty-one million, thirty-one thousand, two hundred thirty-one".

Divisors: 1 59 173407309 10231031231