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10021031 = 232391823
BaseRepresentation
bin100110001110…
…100010100111
3200212010021022
4212032202213
510031133111
6554441355
7151114556
oct46164247
920763238
1010021031
115724a49
12343325b
1320cb307
14148bd9d
15d2e2db
hex98e8a7

10021031 has 8 divisors (see below), whose sum is σ = 10506240. Its totient is φ = 9539992.

The previous prime is 10021027. The next prime is 10021049. The reversal of 10021031 is 13012001.

10021031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10021031 - 22 = 10021027 is a prime.

It is a super-2 number, since 2×100210312 = 200842124605922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021001) 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, 4586 + ... + 6408.

It is an arithmetic number, because the mean of its divisors is an integer number (1313280).

Almost surely, 210021031 is an apocalyptic number.

10021031 is a deficient number, since it is larger than the sum of its proper divisors (485209).

10021031 is a wasteful number, since it uses less digits than its factorization.

10021031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 10021031 is about 3165.6012067220. The cubic root of 10021031 is about 215.5943963007.

Adding to 10021031 its reverse (13012001), we get a palindrome (23033032).

The spelling of 10021031 in words is "ten million, twenty-one thousand, thirty-one".

Divisors: 1 23 239 1823 5497 41929 435697 10021031