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30401223124 = 2240118953381
BaseRepresentation
bin11100010100000011…
…011101100111010100
32220110201021011000211
4130110003131213110
5444230203114444
621544403415204
72124241063366
oct342403354724
986421234024
1030401223124
1111990774998
125a85384504
132b3654432c
14168584ad36
15bcde7ec34
hex7140dd9d4

30401223124 has 12 divisors (see below), whose sum is σ = 53334816948. Its totient is φ = 15162704000.

The previous prime is 30401223113. The next prime is 30401223217. The reversal of 30401223124 is 42132210403.

It can be written as a sum of positive squares in 2 ways, for example, as 27070779024 + 3330444100 = 164532^2 + 57710^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30401223095 and 30401223104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9475087 + ... + 9478294.

It is an arithmetic number, because the mean of its divisors is an integer number (4444568079).

Almost surely, 230401223124 is an apocalyptic number.

It is an amenable number.

30401223124 is a deficient number, since it is larger than the sum of its proper divisors (22933593824).

30401223124 is a wasteful number, since it uses less digits than its factorization.

30401223124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18953786 (or 18953784 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 30401223124 its reverse (42132210403), we get a palindrome (72533433527).

The spelling of 30401223124 in words is "thirty billion, four hundred one million, two hundred twenty-three thousand, one hundred twenty-four".

Divisors: 1 2 4 401 802 1604 18953381 37906762 75813524 7600305781 15200611562 30401223124