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31230032053 = 1117295758811
BaseRepresentation
bin11101000101011101…
…000111100010110101
32222121110211000010211
4131011131013202311
51002424342011203
622202531545421
72153623615063
oct350535074265
988543730124
1031230032053
11122765a2350
126076a5b271
132c3917300c
141723955033
15c2bae7c6d
hex7457478b5

31230032053 has 16 divisors (see below), whose sum is σ = 37317101760. Its totient is φ = 25799468800.

The previous prime is 31230032023. The next prime is 31230032069. The reversal of 31230032053 is 35023003213.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-31230032053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31230032023) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 2873983 + ... + 2884828.

It is an arithmetic number, because the mean of its divisors is an integer number (2332318860).

Almost surely, 231230032053 is an apocalyptic number.

It is an amenable number.

31230032053 is a deficient number, since it is larger than the sum of its proper divisors (6087069707).

31230032053 is a wasteful number, since it uses less digits than its factorization.

31230032053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5758868.

The product of its (nonzero) digits is 1620, while the sum is 22.

Adding to 31230032053 its reverse (35023003213), we get a palindrome (66253035266).

The spelling of 31230032053 in words is "thirty-one billion, two hundred thirty million, thirty-two thousand, fifty-three".

Divisors: 1 11 17 29 187 319 493 5423 5758811 63346921 97899787 167005519 1076897657 1837060709 2839093823 31230032053