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310431413 = 331393701
BaseRepresentation
bin10010100000001…
…100111010110101
3210122010112211202
4102200030322311
51113432301123
650445342245
710456423565
oct2240147265
9718115752
10310431413
1114a259796
1287b67985
134c410b36
142d32ada5
151c3bea28
hex1280ceb5

310431413 has 4 divisors (see below), whose sum is σ = 310528428. Its totient is φ = 310334400.

The previous prime is 310431403. The next prime is 310431419. The reversal of 310431413 is 314134013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314134013 = 1372292949.

It can be written as a sum of positive squares in 2 ways, for example, as 295049329 + 15382084 = 17177^2 + 3922^2 .

It is a cyclic number.

It is not a de Polignac number, because 310431413 - 214 = 310415029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (310431419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43538 + ... + 50163.

It is an arithmetic number, because the mean of its divisors is an integer number (77632107).

Almost surely, 2310431413 is an apocalyptic number.

It is an amenable number.

310431413 is a deficient number, since it is larger than the sum of its proper divisors (97015).

310431413 is an equidigital number, since it uses as much as digits as its factorization.

310431413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97014.

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

The square root of 310431413 is about 17619.0639081649. The cubic root of 310431413 is about 677.1037523526.

Adding to 310431413 its reverse (314134013), we get a palindrome (624565426).

The spelling of 310431413 in words is "three hundred ten million, four hundred thirty-one thousand, four hundred thirteen".

Divisors: 1 3313 93701 310431413