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2313131297 = 7929280143
BaseRepresentation
bin1000100111011111…
…1001010100100001
312222012120020121112
42021313321110201
514214130200142
61021310233105
7111215202011
oct21167712441
95865506545
102313131297
11a8777a864
125467b5795
132ab2c2059
1417d2c9c41
15d8117382
hex89df9521

2313131297 has 4 divisors (see below), whose sum is σ = 2342411520. Its totient is φ = 2283851076.

The previous prime is 2313131287. The next prime is 2313131329. The reversal of 2313131297 is 7921313132.

2313131297 is digitally balanced in base 2, 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, 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 2313131297 - 24 = 2313131281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2313131287) 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, 14639993 + ... + 14640150.

It is an arithmetic number, because the mean of its divisors is an integer number (585602880).

Almost surely, 22313131297 is an apocalyptic number.

It is an amenable number.

2313131297 is a deficient number, since it is larger than the sum of its proper divisors (29280223).

2313131297 is an equidigital number, since it uses as much as digits as its factorization.

2313131297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29280222.

The product of its digits is 6804, while the sum is 32.

The square root of 2313131297 is about 48095.0236199131. The cubic root of 2313131297 is about 1322.5134420442.

The spelling of 2313131297 in words is "two billion, three hundred thirteen million, one hundred thirty-one thousand, two hundred ninety-seven".

Divisors: 1 79 29280143 2313131297