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70201031 = 1811991949
BaseRepresentation
bin1000010111100…
…10111011000111
311220002120201012
410023302323013
5120432413111
610544352435
71511461505
oct413627307
9156076635
1070201031
113669908a
121b61571b
131170c194
149475675
15626a48b
hex42f2ec7

70201031 has 8 divisors (see below), whose sum is σ = 70980000. Its totient is φ = 69426720.

The previous prime is 70201013. The next prime is 70201049. The reversal of 70201031 is 13010207.

It is an interprime number because it is at equal distance from previous prime (70201013) and next prime (70201049).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70201031 - 222 = 66006727 is a prime.

It is a super-2 number, since 2×702010312 = 9856369506925922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70200997 and 70201015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70201631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35045 + ... + 36993.

It is an arithmetic number, because the mean of its divisors is an integer number (8872500).

Almost surely, 270201031 is an apocalyptic number.

70201031 is a deficient number, since it is larger than the sum of its proper divisors (778969).

70201031 is a wasteful number, since it uses less digits than its factorization.

70201031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 70201031 is about 8378.6055522384. The cubic root of 70201031 is about 412.5226796223.

Adding to 70201031 its reverse (13010207), we get a palindrome (83211238).

The spelling of 70201031 in words is "seventy million, two hundred one thousand, thirty-one".

Divisors: 1 181 199 1949 36019 352769 387851 70201031