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971031 = 3674831
BaseRepresentation
bin11101101000100010111
31211100000010
43231010113
5222033111
632451303
711152665
oct3550427
91740003
10971031
11603606
123a9b33
1327cc99
141b3c35
15142aa6
hexed117

971031 has 8 divisors (see below), whose sum is σ = 1314304. Its totient is φ = 637560.

The previous prime is 971029. The next prime is 971039. The reversal of 971031 is 130179.

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

It is not a de Polignac number, because 971031 - 21 = 971029 is a prime.

It is a super-2 number, since 2×9710312 = 1885802405922, 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 = 970989 and 971007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2215 + ... + 2616.

It is an arithmetic number, because the mean of its divisors is an integer number (164288).

2971031 is an apocalyptic number.

971031 is a deficient number, since it is larger than the sum of its proper divisors (343273).

971031 is a wasteful number, since it uses less digits than its factorization.

971031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4901.

The product of its (nonzero) digits is 189, while the sum is 21.

The square root of 971031 is about 985.4090521200. The cubic root of 971031 is about 99.0248891610.

It can be divided in two parts, 97 and 1031, that added together give a triangular number (1128 = T47).

The spelling of 971031 in words is "nine hundred seventy-one thousand, thirty-one".

Divisors: 1 3 67 201 4831 14493 323677 971031