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31444234319 = 1916346321929
BaseRepresentation
bin11101010010001110…
…001111000001001111
310000011101212121102002
4131102032033001033
51003344210444234
622240103022515
72162134403351
oct352216170117
9100141777362
1031444234319
11123764a5713
12611673aa3b
132c71660814
1417441930d1
15c4080a27e
hex75238f04f

31444234319 has 16 divisors (see below), whose sum is σ = 33375705600. Its totient is φ = 29541226176.

The previous prime is 31444234301. The next prime is 31444234321. The reversal of 31444234319 is 91343244413.

It is a cyclic number.

It is not a de Polignac number, because 31444234319 - 216 = 31444168783 is a prime.

It is a super-2 number, since 2×314442343192 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31444234379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1422947 + ... + 1444875.

It is an arithmetic number, because the mean of its divisors is an integer number (2085981600).

Almost surely, 231444234319 is an apocalyptic number.

31444234319 is a deficient number, since it is larger than the sum of its proper divisors (1931471281).

31444234319 is a wasteful number, since it uses less digits than its factorization.

31444234319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22574.

The product of its digits is 124416, while the sum is 38.

The spelling of 31444234319 in words is "thirty-one billion, four hundred forty-four million, two hundred thirty-four thousand, three hundred nineteen".

Divisors: 1 19 163 463 3097 8797 21929 75469 416651 1433911 3574427 10153127 67914113 192909413 1654959701 31444234319