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31303140053 = 198271992181
BaseRepresentation
bin11101001001110100…
…000000001011010101
32222210120101021110112
4131021310000023111
51003102100440203
622214102532405
72155502204663
oct351164001325
988716337415
1031303140053
1112303896489
126097437105
132c4b35c3a3
14172d545c33
15c332396d8
hex749d002d5

31303140053 has 8 divisors (see below), whose sum is σ = 32990533920. Its totient is φ = 29619732240.

The previous prime is 31303140049. The next prime is 31303140097. The reversal of 31303140053 is 35004130313.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31303140053 - 22 = 31303140049 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 (31303140853) 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, 980378 + ... + 1011803.

It is an arithmetic number, because the mean of its divisors is an integer number (4123816740).

Almost surely, 231303140053 is an apocalyptic number.

It is an amenable number.

31303140053 is a deficient number, since it is larger than the sum of its proper divisors (1687393867).

31303140053 is a wasteful number, since it uses less digits than its factorization.

31303140053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993027.

The product of its (nonzero) digits is 1620, while the sum is 23.

Adding to 31303140053 its reverse (35004130313), we get a palindrome (66307270366).

The spelling of 31303140053 in words is "thirty-one billion, three hundred three million, one hundred forty thousand, fifty-three".

Divisors: 1 19 827 15713 1992181 37851439 1647533687 31303140053