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310024013 = 131091371597
BaseRepresentation
bin10010011110101…
…001011101001101
3210121100211222212
4102132221131031
51113331232023
650432520205
710453106045
oct2236513515
9717324885
10310024013
1114a0006a2
12879b0065
134c2ca580
142d262725
151c33de78
hex127a974d

310024013 has 16 divisors (see below), whose sum is σ = 339606960. Its totient is φ = 281304576.

The previous prime is 310024009. The next prime is 310024037. The reversal of 310024013 is 310420013.

It can be written as a sum of positive squares in 8 ways, for example, as 13564489 + 296459524 = 3683^2 + 17218^2 .

It is a cyclic number.

It is not a de Polignac number, because 310024013 - 22 = 310024009 is a prime.

It is a super-2 number, since 2×3100240132 = 192229777273248338, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (310024003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193331 + ... + 194927.

It is an arithmetic number, because the mean of its divisors is an integer number (21225435).

Almost surely, 2310024013 is an apocalyptic number.

It is an amenable number.

310024013 is a deficient number, since it is larger than the sum of its proper divisors (29582947).

310024013 is a wasteful number, since it uses less digits than its factorization.

310024013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 310024013 is about 17607.4987718301. The cubic root of 310024013 is about 676.8074197670.

Adding to 310024013 its reverse (310420013), we get a palindrome (620444026).

The spelling of 310024013 in words is "three hundred ten million, twenty-four thousand, thirteen".

Divisors: 1 13 109 137 1417 1597 1781 14933 20761 174073 194129 218789 2262949 2844257 23848001 310024013