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10221323031 = 321517521209
BaseRepresentation
bin10011000010011110…
…10000001100010111
3222101100020000020200
421201033100030113
5131413124314111
64410130231543
7511202545413
oct114117201427
928340200220
1010221323031
114375741307
121b931255b3
13c6b7cc14a
146cd6d5d43
153ec52a256
hex2613d0317

10221323031 has 12 divisors (see below), whose sum is σ = 14861910960. Its totient is φ = 6769087200.

The previous prime is 10221323029. The next prime is 10221323033. The reversal of 10221323031 is 13032312201.

It is an interprime number because it is at equal distance from previous prime (10221323029) and next prime (10221323033).

It is not a de Polignac number, because 10221323031 - 21 = 10221323029 is a prime.

It is a super-2 number, since 2×102213230312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10221322995 and 10221323013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221323033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3759246 + ... + 3761963.

It is an arithmetic number, because the mean of its divisors is an integer number (1238492580).

Almost surely, 210221323031 is an apocalyptic number.

10221323031 is a deficient number, since it is larger than the sum of its proper divisors (4640587929).

10221323031 is a wasteful number, since it uses less digits than its factorization.

10221323031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7521366 (or 7521363 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 10221323031 its reverse (13032312201), we get a palindrome (23253635232).

The spelling of 10221323031 in words is "ten billion, two hundred twenty-one million, three hundred twenty-three thousand, thirty-one".

Divisors: 1 3 9 151 453 1359 7521209 22563627 67690881 1135702559 3407107677 10221323031