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2131310310 = 23571043677
BaseRepresentation
bin111111100001001…
…0011011011100110
312111112102210002220
41333002103123212
513331103412220
6551253213210
7103546560453
oct17702233346
95445383086
102131310310
119a4083a88
124b5931206
1327c73137c
141630ba82a
15c719e540
hex7f0936e6

2131310310 has 16 divisors (see below), whose sum is σ = 5115144816. Its totient is φ = 568349408.

The previous prime is 2131310261. The next prime is 2131310329. The reversal of 2131310310 is 130131312.

It is a super-2 number, since 2×21313103102 = 9084967275024592200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2131310310.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35521809 + ... + 35521868.

It is an arithmetic number, because the mean of its divisors is an integer number (319696551).

Almost surely, 22131310310 is an apocalyptic number.

2131310310 is an abundant number, since it is smaller than the sum of its proper divisors (2983834506).

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

2131310310 is a wasteful number, since it uses less digits than its factorization.

2131310310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71043687.

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

The square root of 2131310310 is about 46166.1164708491. The cubic root of 2131310310 is about 1286.9121325403.

Adding to 2131310310 its reverse (130131312), we get a palindrome (2261441622).

The spelling of 2131310310 in words is "two billion, one hundred thirty-one million, three hundred ten thousand, three hundred ten".

Divisors: 1 2 3 5 6 10 15 30 71043677 142087354 213131031 355218385 426262062 710436770 1065655155 2131310310