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1972031 is a prime number
BaseRepresentation
bin111100001011100111111
310201012010012
413201130333
51001101111
6110133435
722522235
oct7413477
93635105
101972031
111127686
127b127b
135407a9
14394955
1528e48b
hex1e173f

1972031 has 2 divisors, whose sum is σ = 1972032. Its totient is φ = 1972030.

The previous prime is 1972013. The next prime is 1972037. The reversal of 1972031 is 1302791.

Together with previous prime (1972013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1972031 - 26 = 1971967 is a prime.

It is a super-2 number, since 2×19720312 = 7777812529922, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1971988 and 1972006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1972037) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986015 + 986016.

It is an arithmetic number, because the mean of its divisors is an integer number (986016).

21972031 is an apocalyptic number.

1972031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1972031 is an equidigital number, since it uses as much as digits as its factorization.

1972031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1972031 is about 1404.2902121713. The cubic root of 1972031 is about 125.4020335658.

The spelling of 1972031 in words is "one million, nine hundred seventy-two thousand, thirty-one".