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31112231113201 = 717261447320279
BaseRepresentation
bin1110001001011111000010…
…11110111101000111110001
311002011022002212202110021111
413010233201132331013301
513034220322131110301
6150100432303553321
76360533043021010
oct704574136750761
9132138085673244
1031112231113201
119a05694407467
1235a59132bb841
131448b4220abc4
14797ba9032a77
1538e47944d551
hex1c4be17bd1f1

31112231113201 has 8 divisors (see below), whose sum is σ = 37648414120320. Its totient is φ = 25098942746688.

The previous prime is 31112231113163. The next prime is 31112231113213. The reversal of 31112231113201 is 10231113221113.

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

It is not a de Polignac number, because 31112231113201 - 221 = 31112229016049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31112231113231) 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, 130723660021 + ... + 130723660258.

It is an arithmetic number, because the mean of its divisors is an integer number (4706051765040).

Almost surely, 231112231113201 is an apocalyptic number.

It is an amenable number.

31112231113201 is a deficient number, since it is larger than the sum of its proper divisors (6536183007119).

31112231113201 is a wasteful number, since it uses less digits than its factorization.

31112231113201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261447320303.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 31112231113201 its reverse (10231113221113), we get a palindrome (41343344334314).

The spelling of 31112231113201 in words is "thirty-one trillion, one hundred twelve billion, two hundred thirty-one million, one hundred thirteen thousand, two hundred one".

Divisors: 1 7 17 119 261447320279 1830131241953 4444604444743 31112231113201