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103111312213 = 7132371693871
BaseRepresentation
bin110000000000111101…
…0011100001101010101
3100212011000010101020101
41200001322130031111
53142132443442323
6115211345134101
710310123456410
oct1400172341525
9325130111211
10103111312213
113a802714008
1217b9792a331
1399532986a0
144dc2360b77
152a37469dad
hex1801e9c355

103111312213 has 32 divisors (see below), whose sum is σ = 134289211392. Its totient is φ = 76936305600.

The previous prime is 103111312163. The next prime is 103111312223. The reversal of 103111312213 is 312213111301.

It is not a de Polignac number, because 103111312213 - 29 = 103111311701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103111312223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198333 + ... + 495538.

It is an arithmetic number, because the mean of its divisors is an integer number (4196537856).

Almost surely, 2103111312213 is an apocalyptic number.

103111312213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

103111312213 is a deficient number, since it is larger than the sum of its proper divisors (31177899179).

103111312213 is a wasteful number, since it uses less digits than its factorization.

103111312213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693985.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 103111312213 its reverse (312213111301), we get a palindrome (415324423514).

The spelling of 103111312213 in words is "one hundred three billion, one hundred eleven million, three hundred twelve thousand, two hundred thirteen".

Divisors: 1 7 13 23 71 91 161 299 497 923 1633 2093 6461 11431 21229 148603 693871 4857097 9020323 15959033 49264841 63142261 111713231 207467429 344853887 640442933 1133091343 1452272003 4483100531 7931639401 14730187459 103111312213