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32220240031 = 72976778927
BaseRepresentation
bin11110000000011110…
…011101100010011111
310002011111001210010101
4132000132131202133
51011441340140111
622445103321531
72220306343600
oct360036354237
9102144053111
1032220240031
1112734538251
1262b25b02a7
1330663621b5
1417b9273da7
15c889e2bc1
hex78079d89f

32220240031 has 12 divisors (see below), whose sum is σ = 37867091808. Its totient is φ = 27332629632.

The previous prime is 32220239993. The next prime is 32220240067. The reversal of 32220240031 is 13004202223.

It is not a de Polignac number, because 32220240031 - 213 = 32220231839 is a prime.

It is a super-2 number, since 2×322202400312 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 32220239990 and 32220240008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32220240331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3384711 + ... + 3394216.

It is an arithmetic number, because the mean of its divisors is an integer number (3155590984).

Almost surely, 232220240031 is an apocalyptic number.

32220240031 is a deficient number, since it is larger than the sum of its proper divisors (5646851777).

32220240031 is an equidigital number, since it uses as much as digits as its factorization.

32220240031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6779038 (or 6779031 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 32220240031 its reverse (13004202223), we get a palindrome (45224442254).

The spelling of 32220240031 in words is "thirty-two billion, two hundred twenty million, two hundred forty thousand, thirty-one".

Divisors: 1 7 49 97 679 4753 6778927 47452489 332167423 657555919 4602891433 32220240031