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2556433131 = 371065711423
BaseRepresentation
bin1001100001100000…
…0001001011101011
320121011101020222120
42120120001023223
520213421330011
61101401122323
7120231215550
oct23030011353
96534336876
102556433131
1110a204905a
125b41893a3
1331982aa35
141a3740a27
15ee676a06
hex986012eb

2556433131 has 16 divisors (see below), whose sum is σ = 3896223744. Its totient is φ = 1460553984.

The previous prime is 2556433097. The next prime is 2556433163. The reversal of 2556433131 is 1313346552.

It is not a de Polignac number, because 2556433131 - 26 = 2556433067 is a prime.

It is a super-2 number, since 2×25564331312 = 13070700706548926322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2556433092 and 2556433101.

It is not an unprimeable number, because it can be changed into a prime (2556423131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218086 + ... + 229508.

It is an arithmetic number, because the mean of its divisors is an integer number (243513984).

Almost surely, 22556433131 is an apocalyptic number.

2556433131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2556433131 is a deficient number, since it is larger than the sum of its proper divisors (1339790613).

2556433131 is a wasteful number, since it uses less digits than its factorization.

2556433131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22090.

The product of its digits is 32400, while the sum is 33.

The square root of 2556433131 is about 50561.1820569891. The cubic root of 2556433131 is about 1367.3451224345.

Adding to 2556433131 its reverse (1313346552), we get a palindrome (3869779683).

The spelling of 2556433131 in words is "two billion, five hundred fifty-six million, four hundred thirty-three thousand, one hundred thirty-one".

Divisors: 1 3 7 21 10657 11423 31971 34269 74599 79961 223797 239883 121734911 365204733 852144377 2556433131