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10021313031 = 317918661663
BaseRepresentation
bin10010101010101000…
…10001101000000111
3221212101212110002220
421111110101220013
5131010424004111
64334223303423
7503223520032
oct112524215007
927771773086
1010021313031
114282851894
121b3814ab73
13c39240432
146b0d10019
153d9bbce06
hex255511a07

10021313031 has 8 divisors (see below), whose sum is σ = 13436398080. Its totient is φ = 6643551672.

The previous prime is 10021312999. The next prime is 10021313033. The reversal of 10021313031 is 13031312001.

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

It is not a de Polignac number, because 10021313031 - 25 = 10021312999 is a prime.

It is a super-2 number, since 2×100213130312 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10021313031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021313033) 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, 9330295 + ... + 9331368.

It is an arithmetic number, because the mean of its divisors is an integer number (1679549760).

Almost surely, 210021313031 is an apocalyptic number.

10021313031 is a deficient number, since it is larger than the sum of its proper divisors (3415085049).

10021313031 is a wasteful number, since it uses less digits than its factorization.

10021313031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18661845.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 10021313031 its reverse (13031312001), we get a palindrome (23052625032).

The spelling of 10021313031 in words is "ten billion, twenty-one million, three hundred thirteen thousand, thirty-one".

Divisors: 1 3 179 537 18661663 55984989 3340437677 10021313031