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2231142 = 23371857
BaseRepresentation
bin1000100000101101100110
311012100112220
420200231212
51032344032
6115453210
724651534
oct10405546
94170486
102231142
111294321
128b7206
13601704
14421154
152e112c
hex220b66

2231142 has 8 divisors (see below), whose sum is σ = 4462296. Its totient is φ = 743712.

The previous prime is 2231129. The next prime is 2231149. The reversal of 2231142 is 2411322.

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

It is a super-3 number, since 3×22311423 = 33319838645239545864, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231149) 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, 185923 + ... + 185934.

It is an arithmetic number, because the mean of its divisors is an integer number (557787).

22231142 is an apocalyptic number.

2231142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2231142 is a wasteful number, since it uses less digits than its factorization.

2231142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371862.

The product of its digits is 96, while the sum is 15.

The square root of 2231142 is about 1493.7007732474. The cubic root of 2231142 is about 130.6699536981.

Adding to 2231142 its reverse (2411322), we get a palindrome (4642464).

The spelling of 2231142 in words is "two million, two hundred thirty-one thousand, one hundred forty-two".

Divisors: 1 2 3 6 371857 743714 1115571 2231142