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20310011310 = 2352329434799
BaseRepresentation
bin10010111010100100…
…100010110110101110
31221102102212110211010
4102322210202312232
5313043330330220
613155202010050
71316205150651
oct227244426656
957372773733
1020310011310
118682521116
123b29946926
131bb899c494
14da9543898
157dd0a61e0
hex4ba922dae

20310011310 has 32 divisors (see below), whose sum is σ = 50863334400. Its totient is φ = 5180524448.

The previous prime is 20310011303. The next prime is 20310011327. The reversal of 20310011310 is 1311001302.

It is a super-2 number, since 2×203100113102 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14716710 + ... + 14718089.

It is an arithmetic number, because the mean of its divisors is an integer number (1589479200).

Almost surely, 220310011310 is an apocalyptic number.

20310011310 is an abundant number, since it is smaller than the sum of its proper divisors (30553323090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20310011310 is a wasteful number, since it uses less digits than its factorization.

20310011310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29434832.

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

Adding to 20310011310 its reverse (1311001302), we get a palindrome (21621012612).

The spelling of 20310011310 in words is "twenty billion, three hundred ten million, eleven thousand, three hundred ten".

Divisors: 1 2 3 5 6 10 15 23 30 46 69 115 138 230 345 690 29434799 58869598 88304397 147173995 176608794 294347990 441521985 677000377 883043970 1354000754 2031001131 3385001885 4062002262 6770003770 10155005655 20310011310