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2130231 = 34991423
BaseRepresentation
bin1000001000000100110111
311000020010110
420020010313
51021131411
6113354103
724051405
oct10100467
94006113
102130231
111225524
12868933
135977bc
143d6475
152c12a6
hex208137

2130231 has 8 divisors (see below), whose sum is σ = 2848000. Its totient is φ = 1416312.

The previous prime is 2130209. The next prime is 2130239. The reversal of 2130231 is 1320312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2130231 - 29 = 2129719 is a prime.

It is a super-2 number, since 2×21302312 = 9075768226722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786 + ... + 2208.

It is an arithmetic number, because the mean of its divisors is an integer number (356000).

22130231 is an apocalyptic number.

2130231 is a deficient number, since it is larger than the sum of its proper divisors (717769).

2130231 is a wasteful number, since it uses less digits than its factorization.

2130231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2130231 is about 1459.5310890831. The cubic root of 2130231 is about 128.6694862182.

Adding to 2130231 its reverse (1320312), we get a palindrome (3450543).

The spelling of 2130231 in words is "two million, one hundred thirty thousand, two hundred thirty-one".

Divisors: 1 3 499 1423 1497 4269 710077 2130231