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31012101323 = 72741785331
BaseRepresentation
bin11100111000011101…
…110001110011001011
32222001021201222101022
4130320131301303023
51002003044220243
622125144543055
72145336340400
oct347035616313
988037658338
1031012101323
1112174582805
126015a81a8b
132c02c7b418
141702a262a7
15c178eab68
hex738771ccb

31012101323 has 12 divisors (see below), whose sum is σ = 36080588232. Its totient is φ = 26577905760.

The previous prime is 31012101299. The next prime is 31012101347. The reversal of 31012101323 is 32310121013.

It is an interprime number because it is at equal distance from previous prime (31012101299) and next prime (31012101347).

It is not a de Polignac number, because 31012101323 - 26 = 31012101259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31012101023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320768 + ... + 406098.

It is an arithmetic number, because the mean of its divisors is an integer number (3006715686).

Almost surely, 231012101323 is an apocalyptic number.

31012101323 is a deficient number, since it is larger than the sum of its proper divisors (5068486909).

31012101323 is an equidigital number, since it uses as much as digits as its factorization.

31012101323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92762 (or 92755 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31012101323 its reverse (32310121013), we get a palindrome (63322222336).

The spelling of 31012101323 in words is "thirty-one billion, twelve million, one hundred one thousand, three hundred twenty-three".

Divisors: 1 7 49 7417 51919 85331 363433 597317 4181219 632900027 4430300189 31012101323