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10311105040 = 245128888813
BaseRepresentation
bin10011001101001011…
…01111101000010000
3222121121011102000021
421212211233220100
5132104120330130
64423054433224
7513342642505
oct114645575020
928547142007
1010311105040
114411393915
121bb9202814
13c842a5ab2
146db5c74ac
1540536237a
hex26696fa10

10311105040 has 20 divisors (see below), whose sum is σ = 23973319404. Its totient is φ = 4124441984.

The previous prime is 10311105031. The next prime is 10311105059. The reversal of 10311105040 is 4050111301.

It can be written as a sum of positive squares in 2 ways, for example, as 7256995344 + 3054109696 = 85188^2 + 55264^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64444327 + ... + 64444486.

Almost surely, 210311105040 is an apocalyptic number.

10311105040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10311105040 is an abundant number, since it is smaller than the sum of its proper divisors (13662214364).

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

10311105040 is a wasteful number, since it uses less digits than its factorization.

10311105040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128888826 (or 128888820 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 10311105040 its reverse (4050111301), we get a palindrome (14361216341).

The spelling of 10311105040 in words is "ten billion, three hundred eleven million, one hundred five thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 128888813 257777626 515555252 644444065 1031110504 1288888130 2062221008 2577776260 5155552520 10311105040