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2130714257 = 7304387751
BaseRepresentation
bin111111100000000…
…0001111010010001
312111111022111110212
41333000001322101
513330430324012
6551232333505
7103541525630
oct17700017221
95444274425
102130714257
119a3807181
124b56a4295
1327c582c89
14162da3517
15c70d2b22
hex7f001e91

2130714257 has 4 divisors (see below), whose sum is σ = 2435102016. Its totient is φ = 1826326500.

The previous prime is 2130714239. The next prime is 2130714263. The reversal of 2130714257 is 7524170312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2130714257 - 228 = 1862278801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2130714217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152193869 + ... + 152193882.

It is an arithmetic number, because the mean of its divisors is an integer number (608775504).

Almost surely, 22130714257 is an apocalyptic number.

It is an amenable number.

2130714257 is a deficient number, since it is larger than the sum of its proper divisors (304387759).

2130714257 is an equidigital number, since it uses as much as digits as its factorization.

2130714257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304387758.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 2130714257 is about 46159.6604948520. The cubic root of 2130714257 is about 1286.7921532406.

Adding to 2130714257 its reverse (7524170312), we get a palindrome (9654884569).

The spelling of 2130714257 in words is "two billion, one hundred thirty million, seven hundred fourteen thousand, two hundred fifty-seven".

Divisors: 1 7 304387751 2130714257