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10102031031 = 33367343677
BaseRepresentation
bin10010110100010000…
…01100001010110111
3222002000202100101110
421122020030022313
5131142104443111
64350225330103
7505223563341
oct113210141267
928060670343
1010102031031
114314373484
121b5b196933
13c4cb92571
146bb922291
153e1d145a6
hex25a20c2b7

10102031031 has 4 divisors (see below), whose sum is σ = 13469374712. Its totient is φ = 6734687352.

The previous prime is 10102031029. The next prime is 10102031053. The reversal of 10102031031 is 13013020101.

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

It is not a de Polignac number, because 10102031031 - 21 = 10102031029 is a prime.

It is a super-2 number, since 2×101020310312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10102030998 and 10102031016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10102031021) 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, 1683671836 + ... + 1683671841.

It is an arithmetic number, because the mean of its divisors is an integer number (3367343678).

Almost surely, 210102031031 is an apocalyptic number.

10102031031 is a deficient number, since it is larger than the sum of its proper divisors (3367343681).

10102031031 is an equidigital number, since it uses as much as digits as its factorization.

10102031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367343680.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 10102031031 its reverse (13013020101), we get a palindrome (23115051132).

The spelling of 10102031031 in words is "ten billion, one hundred two million, thirty-one thousand, thirty-one".

Divisors: 1 3 3367343677 10102031031