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1310012312 = 23726838719
BaseRepresentation
bin100111000010101…
…0011001110011000
310101022000112001112
41032011103032120
510140330343222
6333554035452
744314630610
oct11605231630
93338015045
101310012312
11612516704
12306878b88
1317b53231b
14c5da9a40
157a01bbe2
hex4e153398

1310012312 has 32 divisors (see below), whose sum is σ = 2808537600. Its totient is φ = 561160224.

The previous prime is 1310012309. The next prime is 1310012317. The reversal of 1310012312 is 2132100131.

It is a super-2 number, since 2×13100123122 = 3432264515183170688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310012317) 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, 145889 + ... + 154607.

It is an arithmetic number, because the mean of its divisors is an integer number (87766800).

Almost surely, 21310012312 is an apocalyptic number.

It is an amenable number.

1310012312 is an abundant number, since it is smaller than the sum of its proper divisors (1498525288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1310012312 is a wasteful number, since it uses less digits than its factorization.

1310012312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11415 (or 11411 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1310012312 is about 36194.0922251132. The cubic root of 1310012312 is about 1094.1876092397.

Adding to 1310012312 its reverse (2132100131), we get a palindrome (3442112443).

The spelling of 1310012312 in words is "one billion, three hundred ten million, twelve thousand, three hundred twelve".

Divisors: 1 2 4 7 8 14 28 56 2683 5366 8719 10732 17438 18781 21464 34876 37562 61033 69752 75124 122066 150248 244132 488264 23393077 46786154 93572308 163751539 187144616 327503078 655006156 1310012312