Search a number
-
+
3131110025 = 52125244401
BaseRepresentation
bin1011101010100000…
…1111001010001001
322002012201212110222
42322220033022021
522403031010100
61234410315425
7140406665441
oct27250171211
98065655428
103131110025
11136748033a
12734728b75
133ab8cb334
14219bb5121
15134d41485
hexbaa0f289

3131110025 has 6 divisors (see below), whose sum is σ = 3882576462. Its totient is φ = 2504888000.

The previous prime is 3131110013. The next prime is 3131110043. The reversal of 3131110025 is 5200111313.

It can be written as a sum of positive squares in 3 ways, for example, as 272283001 + 2858827024 = 16501^2 + 53468^2 .

It is not a de Polignac number, because 3131110025 - 24 = 3131110009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3131109985 and 3131110012.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62622176 + ... + 62622225.

It is an arithmetic number, because the mean of its divisors is an integer number (647096077).

Almost surely, 23131110025 is an apocalyptic number.

It is an amenable number.

3131110025 is a deficient number, since it is larger than the sum of its proper divisors (751466437).

3131110025 is a wasteful number, since it uses less digits than its factorization.

3131110025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125244411 (or 125244406 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 3131110025 is about 55956.3224756595. The cubic root of 3131110025 is about 1462.9610925898.

Adding to 3131110025 its reverse (5200111313), we get a palindrome (8331221338).

The spelling of 3131110025 in words is "three billion, one hundred thirty-one million, one hundred ten thousand, twenty-five".

Divisors: 1 5 25 125244401 626222005 3131110025