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310980113 = 1392237267
BaseRepresentation
bin10010100010010…
…010111000010001
3210200011102111222
4102202102320101
51114102330423
650505214425
710464200363
oct2242227021
9720142458
10310980113
1114a5a3a64
1288191415
134c573802
142d430d33
151c47c3c8
hex12892e11

310980113 has 4 divisors (see below), whose sum is σ = 313217520. Its totient is φ = 308742708.

The previous prime is 310980107. The next prime is 310980139. The reversal of 310980113 is 311089013.

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, and also an emirpimes, since its reverse is a distinct semiprime: 311089013 = 1429217697.

It is a cyclic number.

It is not a de Polignac number, because 310980113 - 218 = 310717969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (310980143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1118495 + ... + 1118772.

It is an arithmetic number, because the mean of its divisors is an integer number (78304380).

Almost surely, 2310980113 is an apocalyptic number.

It is an amenable number.

310980113 is a deficient number, since it is larger than the sum of its proper divisors (2237407).

310980113 is a wasteful number, since it uses less digits than its factorization.

310980113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2237406.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 310980113 is about 17634.6282353783. The cubic root of 310980113 is about 677.5024535706.

Subtracting 310980113 from its reverse (311089013), we obtain a square (108900 = 3302).

The spelling of 310980113 in words is "three hundred ten million, nine hundred eighty thousand, one hundred thirteen".

Divisors: 1 139 2237267 310980113