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31144301 = 208714923
BaseRepresentation
bin111011011001…
…1100101101101
32011121021221122
41312303211231
530433104201
63031310325
7525502466
oct166634555
964537848
1031144301
11166421a1
12a51b3a5
1365b5aa6
1441c9d6d
152b02e1b
hex1db396d

31144301 has 4 divisors (see below), whose sum is σ = 31161312. Its totient is φ = 31127292.

The previous prime is 31144279. The next prime is 31144303. The reversal of 31144301 is 10344113.

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.

It is a cyclic number.

It is not a de Polignac number, because 31144301 - 214 = 31127917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31144301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144303) 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, 5375 + ... + 9548.

It is an arithmetic number, because the mean of its divisors is an integer number (7790328).

Almost surely, 231144301 is an apocalyptic number.

It is an amenable number.

31144301 is a deficient number, since it is larger than the sum of its proper divisors (17011).

31144301 is a wasteful number, since it uses less digits than its factorization.

31144301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17010.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 31144301 is about 5580.7079300031. The cubic root of 31144301 is about 314.6247349435.

Adding to 31144301 its reverse (10344113), we get a palindrome (41488414).

The spelling of 31144301 in words is "thirty-one million, one hundred forty-four thousand, three hundred one".

Divisors: 1 2087 14923 31144301