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10311402221 = 17957605599
BaseRepresentation
bin10011001101001101…
…11000001011101101
3222121121201111122222
421212212320023231
5132104204332341
64423105045125
7513345321101
oct114646701355
928547644588
1010311402221
11441157711a
121bb93267a5
13c8437b143
146db663901
154053c044b
hex2669b82ed

10311402221 has 4 divisors (see below), whose sum is σ = 10369008000. Its totient is φ = 10253796444.

The previous prime is 10311402137. The next prime is 10311402223. The reversal of 10311402221 is 12220411301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10311402221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10311402221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10311402223) 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, 28802621 + ... + 28802978.

It is an arithmetic number, because the mean of its divisors is an integer number (2592252000).

Almost surely, 210311402221 is an apocalyptic number.

It is an amenable number.

10311402221 is a deficient number, since it is larger than the sum of its proper divisors (57605779).

10311402221 is an equidigital number, since it uses as much as digits as its factorization.

10311402221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57605778.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 10311402221 its reverse (12220411301), we get a palindrome (22531813522).

The spelling of 10311402221 in words is "ten billion, three hundred eleven million, four hundred two thousand, two hundred twenty-one".

Divisors: 1 179 57605599 10311402221