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2312030431 = 8292788939
BaseRepresentation
bin1000100111001110…
…1100100011011111
312222010111022111201
42021303230203133
514213334433211
61021230500331
7111202635334
oct21163544337
95863438451
102312030431
11a87098757
125463646a7
132aacc7c59
1417d0c098b
15d7e9b0c1
hex89cec8df

2312030431 has 4 divisors (see below), whose sum is σ = 2314820200. Its totient is φ = 2309240664.

The previous prime is 2312030419. The next prime is 2312030459. The reversal of 2312030431 is 1340302132.

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

It is a cyclic number.

It is not a de Polignac number, because 2312030431 - 29 = 2312029919 is a prime.

It is a super-2 number, since 2×23120304312 = 10690969427740091522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2312030399 and 2312030408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312030411) 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, 1393641 + ... + 1395298.

It is an arithmetic number, because the mean of its divisors is an integer number (578705050).

Almost surely, 22312030431 is an apocalyptic number.

2312030431 is a deficient number, since it is larger than the sum of its proper divisors (2789769).

2312030431 is an equidigital number, since it uses as much as digits as its factorization.

2312030431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789768.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2312030431 is about 48083.5775603272. The cubic root of 2312030431 is about 1322.3036051143.

Adding to 2312030431 its reverse (1340302132), we get a palindrome (3652332563).

The spelling of 2312030431 in words is "two billion, three hundred twelve million, thirty thousand, four hundred thirty-one".

Divisors: 1 829 2788939 2312030431