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3011000031 = 321325735043
BaseRepresentation
bin1011001101111000…
…0011011011011111
321202211201122112200
42303132003123133
522131304000111
61214440102543
7134421035514
oct26336033337
97684648480
103011000031
1113056a3986
12700464a53
1338ca66330
14207c6b30b
15129518256
hexb37836df

3011000031 has 12 divisors (see below), whose sum is σ = 4683778008. Its totient is φ = 1852923024.

The previous prime is 3011000017. The next prime is 3011000039. The reversal of 3011000031 is 1300001103.

It is not a de Polignac number, because 3011000031 - 27 = 3010999903 is a prime.

It is a super-2 number, since 2×30110000312 = 18132242373364001922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 3010999977 and 3011000022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3011000039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12867405 + ... + 12867638.

It is an arithmetic number, because the mean of its divisors is an integer number (390314834).

Almost surely, 23011000031 is an apocalyptic number.

3011000031 is a deficient number, since it is larger than the sum of its proper divisors (1672777977).

3011000031 is a wasteful number, since it uses less digits than its factorization.

3011000031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25735062 (or 25735059 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 9.

The square root of 3011000031 is about 54872.5799557484. The cubic root of 3011000031 is about 1444.0101746443.

Adding to 3011000031 its reverse (1300001103), we get a palindrome (4311001134).

The spelling of 3011000031 in words is "three billion, eleven million, thirty-one", and thus it is an aban number and an uban number.

Divisors: 1 3 9 13 39 117 25735043 77205129 231615387 334555559 1003666677 3011000031