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231373488805 = 5152909302629
BaseRepresentation
bin1101011101111011101…
…1110100001010100101
3211010012211001001022021
43113132323310022211
512242323103120210
6254142544503141
722500436130254
oct3273673641245
9733184031267
10231373488805
118a141336748
1238a1261aab1
1318a8410ca34
14b2acada79b
156042957bda
hex35deef42a5

231373488805 has 8 divisors (see below), whose sum is σ = 277650919800. Its totient is φ = 185096968896.

The previous prime is 231373488767. The next prime is 231373488821. The reversal of 231373488805 is 508884373132.

It can be written as a sum of positive squares in 4 ways, for example, as 2046476644 + 229327012161 = 45238^2 + 478881^2 .

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 231373488805 - 29 = 231373488293 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613231 + ... + 915859.

It is an arithmetic number, because the mean of its divisors is an integer number (34706364975).

Almost surely, 2231373488805 is an apocalyptic number.

It is an amenable number.

231373488805 is a deficient number, since it is larger than the sum of its proper divisors (46277430995).

231373488805 is a wasteful number, since it uses less digits than its factorization.

231373488805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455543.

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 231373488805 in words is "two hundred thirty-one billion, three hundred seventy-three million, four hundred eighty-eight thousand, eight hundred five".

Divisors: 1 5 152909 302629 764545 1513145 46274697761 231373488805