Search a number
-
+
2031030331 = 115371139353
BaseRepresentation
bin111100100001111…
…0001000000111011
312020112202000211121
41321003301000323
513124420432311
6533312010111
7101221321141
oct17103610073
95215660747
102031030331
11952511170
12488230937
13264a202c5
14153a55591
15bd491b71
hex790f103b

2031030331 has 32 divisors (see below), whose sum is σ = 2312271360. Its totient is φ = 1768166400.

The previous prime is 2031030277. The next prime is 2031030347. The reversal of 2031030331 is 1330301302.

It is not a de Polignac number, because 2031030331 - 223 = 2022641723 is a prime.

It is a super-2 number, since 2×20310303312 = 8250168410883939122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2031030361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5753451 + ... + 5753803.

It is an arithmetic number, because the mean of its divisors is an integer number (72258480).

Almost surely, 22031030331 is an apocalyptic number.

2031030331 is a deficient number, since it is larger than the sum of its proper divisors (281241029).

2031030331 is a wasteful number, since it uses less digits than its factorization.

2031030331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 2031030331 is about 45066.9538686608. The cubic root of 2031030331 is about 1266.4035998549.

Adding to 2031030331 its reverse (1330301302), we get a palindrome (3361331633).

The spelling of 2031030331 in words is "two billion, thirty-one million, thirty thousand, three hundred thirty-one".

Divisors: 1 11 53 71 139 353 583 781 1529 3763 3883 7367 9869 18709 25063 41393 49067 81037 108559 205799 275693 523057 539737 1328339 2600551 3483757 5753627 14611729 28606061 38321327 184639121 2031030331