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3131002001 = 191093793989
BaseRepresentation
bin1011101010011111…
…0100110010010001
322002012112101022002
42322213310302101
522403014031001
61234404123345
7140406035501
oct27247646221
98065471262
103131002001
111367407166
12734696555
133ab89110a
14219b87a01
15134d1e46b
hexba9f4c91

3131002001 has 16 divisors (see below), whose sum is σ = 3335640000. Its totient is φ = 2930510016.

The previous prime is 3131001889. The next prime is 3131002019. The reversal of 3131002001 is 1002001313.

It is a cyclic number.

It is not a de Polignac number, because 3131002001 - 226 = 3063893137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3131002031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 782915 + ... + 786903.

It is an arithmetic number, because the mean of its divisors is an integer number (208477500).

Almost surely, 23131002001 is an apocalyptic number.

It is an amenable number.

3131002001 is a deficient number, since it is larger than the sum of its proper divisors (204637999).

3131002001 is a wasteful number, since it uses less digits than its factorization.

3131002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 3131002001 is about 55955.3572144795. The cubic root of 3131002001 is about 1462.9442682341.

Adding to 3131002001 its reverse (1002001313), we get a palindrome (4133003314).

It can be divided in two parts, 313 and 1002001, that multiplied together give a palindrome (313626313).

The spelling of 3131002001 in words is "three billion, one hundred thirty-one million, two thousand, one".

Divisors: 1 19 109 379 2071 3989 7201 41311 75791 434801 784909 1511831 8261219 28724789 164789579 3131002001