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2131255030 = 254113937397
BaseRepresentation
bin111111100001000…
…0101111011110110
312111112022222021111
41333002011323312
513331100130110
6551252105234
7103546240342
oct17702057366
95445288244
102131255030
119a40464a3
124b590521a
1327c712168
141630a4622
15c718ce8a
hex7f085ef6

2131255030 has 32 divisors (see below), whose sum is σ = 3958204320. Its totient is φ = 825703680.

The previous prime is 2131255013. The next prime is 2131255057. The reversal of 2131255030 is 305521312.

It is a junction number, because it is equal to n+sod(n) for n = 2131254992 and 2131255010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38292 + ... + 75688.

It is an arithmetic number, because the mean of its divisors is an integer number (123693885).

Almost surely, 22131255030 is an apocalyptic number.

2131255030 is a deficient number, since it is larger than the sum of its proper divisors (1826949290).

2131255030 is a wasteful number, since it uses less digits than its factorization.

2131255030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37584.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 2131255030 is about 46165.5177594707. The cubic root of 2131255030 is about 1286.9010061897.

Adding to 2131255030 its reverse (305521312), we get a palindrome (2436776342).

The spelling of 2131255030 in words is "two billion, one hundred thirty-one million, two hundred fifty-five thousand, thirty".

Divisors: 1 2 5 10 41 82 139 205 278 410 695 1390 5699 11398 28495 37397 56990 74794 186985 373970 1533277 3066554 5198183 7666385 10396366 15332770 25990915 51981830 213125503 426251006 1065627515 2131255030