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202431144131 = 239984381469
BaseRepresentation
bin1011110010000111010…
…1100010000011000011
3201100111202220121021122
42330201311202003003
511304034333103011
6232555013542455
720424301222526
oct2744165420303
9640452817248
10202431144131
117893a115827
1233295944a2b
1316120bc07b8
149b24d2abbd
1553ebaed3db
hex2f21d620c3

202431144131 has 4 divisors (see below), whose sum is σ = 202515528000. Its totient is φ = 202346760264.

The previous prime is 202431144121. The next prime is 202431144143. The reversal of 202431144131 is 131441134202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202431144131 - 214 = 202431127747 is a prime.

It is a super-2 number, since 2×2024311441312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202431144131.

It is not an unprimeable number, because it can be changed into a prime (202431144121) 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 3 ways as a sum of consecutive naturals, for example, 42188336 + ... + 42193133.

It is an arithmetic number, because the mean of its divisors is an integer number (50628882000).

Almost surely, 2202431144131 is an apocalyptic number.

202431144131 is a deficient number, since it is larger than the sum of its proper divisors (84383869).

202431144131 is an equidigital number, since it uses as much as digits as its factorization.

202431144131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84383868.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 202431144131 its reverse (131441134202), we get a palindrome (333872278333).

The spelling of 202431144131 in words is "two hundred two billion, four hundred thirty-one million, one hundred forty-four thousand, one hundred thirty-one".

Divisors: 1 2399 84381469 202431144131