Search a number
-
+
1031031012 = 223117810841
BaseRepresentation
bin111101011101000…
…100100011100100
32122212001210122210
4331131010203210
54102420443022
6250150323420
734356422214
oct7535044344
92585053583
101031031012
11489a98950
12249359570
131357b352b
149ad08244
15607b0a0c
hex3d7448e4

1031031012 has 24 divisors (see below), whose sum is σ = 2624442912. Its totient is φ = 312433600.

The previous prime is 1031031007. The next prime is 1031031013. The reversal of 1031031012 is 2101301301.

1031031012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1031031013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3905289 + ... + 3905552.

It is an arithmetic number, because the mean of its divisors is an integer number (109351788).

Almost surely, 21031031012 is an apocalyptic number.

1031031012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1031031012 is an abundant number, since it is smaller than the sum of its proper divisors (1593411900).

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

1031031012 is a wasteful number, since it uses less digits than its factorization.

1031031012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7810859 (or 7810857 counting only the distinct ones).

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

The square root of 1031031012 is about 32109.6716270970. The cubic root of 1031031012 is about 1010.2384863095.

Adding to 1031031012 its reverse (2101301301), we get a palindrome (3132332313).

The spelling of 1031031012 in words is "one billion, thirty-one million, thirty-one thousand, twelve".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 7810841 15621682 23432523 31243364 46865046 85919251 93730092 171838502 257757753 343677004 515515506 1031031012