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123120103312 = 247695006457
BaseRepresentation
bin111001010101010000…
…1111010111110010000
3102202210110012021121101
41302222201322332100
54004122221301222
6132321031034144
711616013416343
oct1625241727620
9382713167541
10123120103312
11482400a79a8
121ba4080b954
13b7c173084b
145d5d89445a
153308d70927
hex1caa87af90

123120103312 has 10 divisors (see below), whose sum is σ = 238545200198. Its totient is φ = 61560051648.

The previous prime is 123120103307. The next prime is 123120103339. The reversal of 123120103312 is 213301021321.

It can be written as a sum of positive squares in only one way, i.e., 106174312336 + 16945790976 = 325844^2 + 130176^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123120103312.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3847503213 + ... + 3847503244.

Almost surely, 2123120103312 is an apocalyptic number.

It is an amenable number.

123120103312 is a deficient number, since it is larger than the sum of its proper divisors (115425096886).

123120103312 is an equidigital number, since it uses as much as digits as its factorization.

123120103312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7695006465 (or 7695006459 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123120103312 its reverse (213301021321), we get a palindrome (336421124633).

The spelling of 123120103312 in words is "one hundred twenty-three billion, one hundred twenty million, one hundred three thousand, three hundred twelve".

Divisors: 1 2 4 8 16 7695006457 15390012914 30780025828 61560051656 123120103312