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310312110113 = 1278124279173
BaseRepresentation
bin1001000010000000000…
…10110000100000100001
31002122222011222111110022
410201000002300200201
520041004400010423
6354315545243225
731263552262325
oct4410002604041
91078864874408
10310312110113
1110a66a107255
1250182a93515
1323354397005
141103a90b985
158112b6ddc8
hex48400b0821

310312110113 has 4 divisors (see below), whose sum is σ = 310336402068. Its totient is φ = 310287818160.

The previous prime is 310312110089. The next prime is 310312110149. The reversal of 310312110113 is 311011213013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311011213013 = 977318332869.

It can be written as a sum of positive squares in 2 ways, for example, as 286420843489 + 23891266624 = 535183^2 + 154568^2 .

It is a cyclic number.

It is not a de Polignac number, because 310312110113 - 218 = 310311847969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 310312110091 and 310312110100.

It is not an unprimeable number, because it can be changed into a prime (310312110013) 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, 12126806 + ... + 12152367.

It is an arithmetic number, because the mean of its divisors is an integer number (77584100517).

Almost surely, 2310312110113 is an apocalyptic number.

It is an amenable number.

310312110113 is a deficient number, since it is larger than the sum of its proper divisors (24291955).

310312110113 is a wasteful number, since it uses less digits than its factorization.

310312110113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24291954.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 310312110113 its reverse (311011213013), we get a palindrome (621323323126).

The spelling of 310312110113 in words is "three hundred ten billion, three hundred twelve million, one hundred ten thousand, one hundred thirteen".

Divisors: 1 12781 24279173 310312110113