Search a number
-
+
2531302131 = 37731091549
BaseRepresentation
bin1001011011100000…
…1001101011110011
320112102002110201210
42112320021223303
520141003132011
61055102331203
7116504466411
oct22670115363
96472073653
102531302131
111089943836
125a7889b03
1331456c017
141a027c2b1
15ec3606a6
hex96e09af3

2531302131 has 8 divisors (see below), whose sum is σ = 3379438800. Its totient is φ = 1685350112.

The previous prime is 2531302093. The next prime is 2531302139. The reversal of 2531302131 is 1312031352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2531302131 - 214 = 2531285747 is a prime.

It is a super-2 number, since 2×25313021312 = 12814980956810282322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2531302098 and 2531302107.

It is not an unprimeable number, because it can be changed into a prime (2531302139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543456 + ... + 548093.

It is an arithmetic number, because the mean of its divisors is an integer number (422429850).

Almost surely, 22531302131 is an apocalyptic number.

2531302131 is a deficient number, since it is larger than the sum of its proper divisors (848136669).

2531302131 is a wasteful number, since it uses less digits than its factorization.

2531302131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092325.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 2531302131 is about 50312.0475731211. The cubic root of 2531302131 is about 1362.8498004427.

Adding to 2531302131 its reverse (1312031352), we get a palindrome (3843333483).

The spelling of 2531302131 in words is "two billion, five hundred thirty-one million, three hundred two thousand, one hundred thirty-one".

Divisors: 1 3 773 2319 1091549 3274647 843767377 2531302131