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2012313431 = 15721435981
BaseRepresentation
bin111011111110001…
…0111011101010111
312012020112010002002
41313330113131113
513110123012211
6531402505515
7100603245002
oct16774273527
95166463062
102012313431
11942997957
12481b0529b
13260b98c0b
14151382539
15bb9e603b
hex77f17757

2012313431 has 8 divisors (see below), whose sum is σ = 2026414464. Its totient is φ = 1998228960.

The previous prime is 2012313397. The next prime is 2012313439. The reversal of 2012313431 is 1343132102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2012313431 - 214 = 2012297047 is a prime.

It is a super-2 number, since 2×20123134312 = 8098810689165983522, which 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 (2012313439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333461 + ... + 339441.

It is an arithmetic number, because the mean of its divisors is an integer number (253301808).

Almost surely, 22012313431 is an apocalyptic number.

2012313431 is a deficient number, since it is larger than the sum of its proper divisors (14101033).

2012313431 is a wasteful number, since it uses less digits than its factorization.

2012313431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8281.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2012313431 is about 44858.8166473437. The cubic root of 2012313431 is about 1262.5014200683.

Adding to 2012313431 its reverse (1343132102), we get a palindrome (3355445533).

The spelling of 2012313431 in words is "two billion, twelve million, three hundred thirteen thousand, four hundred thirty-one".

Divisors: 1 157 2143 5981 336451 939017 12817283 2012313431