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10311032131 = 15168284981
BaseRepresentation
bin10011001101001010…
…11101110101000011
3222121121000200222221
421212211131311003
5132104111012011
64423053111511
7513342220111
oct114645356503
928547020887
1010311032131
114411344064
121bb9188597
13c8427b85a
146db5a8ab1
1540534a971
hex26695dd43

10311032131 has 4 divisors (see below), whose sum is σ = 10379317264. Its totient is φ = 10242747000.

The previous prime is 10311032129. The next prime is 10311032153. The reversal of 10311032131 is 13123011301.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10311032131 - 21 = 10311032129 is a prime.

It is a super-2 number, since 2×103110321312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10311032111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34142340 + ... + 34142641.

It is an arithmetic number, because the mean of its divisors is an integer number (2594829316).

Almost surely, 210311032131 is an apocalyptic number.

10311032131 is a deficient number, since it is larger than the sum of its proper divisors (68285133).

10311032131 is an equidigital number, since it uses as much as digits as its factorization.

10311032131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68285132.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 10311032131 its reverse (13123011301), we get a palindrome (23434043432).

The spelling of 10311032131 in words is "ten billion, three hundred eleven million, thirty-two thousand, one hundred thirty-one".

Divisors: 1 151 68284981 10311032131