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31580053 is a prime number
BaseRepresentation
bin111100001110…
…1111110010101
32012102102200121
41320131332111
531041030203
63044511541
7532266061
oct170357625
965372617
1031580053
111690a61a
12a6ab5b1
13670922b
1442a0aa1
152b8c0bd
hex1e1df95

31580053 has 2 divisors, whose sum is σ = 31580054. Its totient is φ = 31580052.

The previous prime is 31580051. The next prime is 31580057. The reversal of 31580053 is 35008513.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20277009 + 11303044 = 4503^2 + 3362^2 .

It is an emirp because it is prime and its reverse (35008513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31580053 - 21 = 31580051 is a prime.

Together with 31580051, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31580051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15790026 + 15790027.

It is an arithmetic number, because the mean of its divisors is an integer number (15790027).

Almost surely, 231580053 is an apocalyptic number.

It is an amenable number.

31580053 is a deficient number, since it is larger than the sum of its proper divisors (1).

31580053 is an equidigital number, since it uses as much as digits as its factorization.

31580053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 31580053 is about 5619.6132429198. The cubic root of 31580053 is about 316.0852898283.

Adding to 31580053 its reverse (35008513), we get a palindrome (66588566).

The spelling of 31580053 in words is "thirty-one million, five hundred eighty thousand, fifty-three".