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9965031 = 33321677

9965031 has 4 divisors (see below), whose sum is σ = 13286712. Its totient is φ = 6643352.

The previous prime is 9965029. The next prime is 9965051. The reversal of 9965031 is 1305699.

9965031 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9965031 - 21 = 9965029 is a prime.

It is a super-2 number, since 2×99650312 = 198603685661922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9964983 and 9965001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9965051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1660836 + ... + 1660841.

It is an arithmetic number, because the mean of its divisors is an integer number (3321678).

Almost surely, 29965031 is an apocalyptic number.

9965031 is the 1997-th centered pentagonal number.

9965031 is a deficient number, since it is larger than the sum of its proper divisors (3321681).

9965031 is a wasteful number, since it uses less digits than its factorization.

9965031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3321680.

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 9965031 is about 3156.7437336597. The cubic root of 9965031 is about 215.1920476210.

It can be divided in two parts, 99650 and 31, that added together give a triangular number (99681 = T446).

The spelling of 9965031 in words is "nine million, nine hundred sixty-five thousand, thirty-one".

Divisors: 1 3 3321677 9965031