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11312231029 = 111028384639
BaseRepresentation
bin10101000100100001…
…01111001001110101
31002012100221212200121
422202100233021311
5141131412343104
65110300211541
7550220243251
oct124220571165
932170855617
1011312231029
114885506670
122238539bb1
1310b3818638
14794549261
154631b7254
hex2a242f275

11312231029 has 4 divisors (see below), whose sum is σ = 12340615680. Its totient is φ = 10283846380.

The previous prime is 11312231027. The next prime is 11312231041. The reversal of 11312231029 is 92013221311.

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 11312231029 - 21 = 11312231027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11312230994 and 11312231012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312231027) 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, 514192309 + ... + 514192330.

It is an arithmetic number, because the mean of its divisors is an integer number (3085153920).

Almost surely, 211312231029 is an apocalyptic number.

It is an amenable number.

11312231029 is a deficient number, since it is larger than the sum of its proper divisors (1028384651).

11312231029 is a wasteful number, since it uses less digits than its factorization.

11312231029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028384650.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 11312231029 in words is "eleven billion, three hundred twelve million, two hundred thirty-one thousand, twenty-nine".

Divisors: 1 11 1028384639 11312231029