Search a number
-
+
22130231231 = 148917878317
BaseRepresentation
bin10100100111000100…
…001000011110111111
32010010021221020010202
4110213010020132333
5330310314344411
614055543354115
71412256601403
oct244704103677
963107836122
1022130231231
119426a362a9
12435745293b
132118b1baa4
1410dd1a1103
15897ca583b
hex5271087bf

22130231231 has 8 divisors (see below), whose sum is σ = 22160150160. Its totient is φ = 22100335488.

The previous prime is 22130231213. The next prime is 22130231257. The reversal of 22130231231 is 13213203122.

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 22130231231 - 210 = 22130230207 is a prime.

It is a super-2 number, since 2×221302312312 (a number of 21 digits) 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 (22130231131) 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, 2656685 + ... + 2665001.

It is an arithmetic number, because the mean of its divisors is an integer number (2770018770).

Almost surely, 222130231231 is an apocalyptic number.

22130231231 is a deficient number, since it is larger than the sum of its proper divisors (29918929).

22130231231 is a wasteful number, since it uses less digits than its factorization.

22130231231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11593.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 22130231231 its reverse (13213203122), we get a palindrome (35343434353).

The spelling of 22130231231 in words is "twenty-two billion, one hundred thirty million, two hundred thirty-one thousand, two hundred thirty-one".

Divisors: 1 1489 1787 8317 2660843 12384013 14862479 22130231231