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31504620001 = 237318763919
BaseRepresentation
bin11101010101110100…
…100101100111100001
310000022121111111222211
4131111310211213201
51004010140320001
622250101202121
72163466565041
oct352564454741
9100277444884
1031504620001
11123a759a338
126132a00341
132c810141aa
14174c1d1721
15c45c87351
hex755d259e1

31504620001 has 8 divisors (see below), whose sum is σ = 33324721920. Its totient is φ = 29722046112.

The previous prime is 31504619957. The next prime is 31504620079. The reversal of 31504620001 is 10002640513.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-31504620001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31504620101) 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 7 ways as a sum of consecutive naturals, for example, 9380281 + ... + 9383638.

It is an arithmetic number, because the mean of its divisors is an integer number (4165590240).

Almost surely, 231504620001 is an apocalyptic number.

It is an amenable number.

31504620001 is a deficient number, since it is larger than the sum of its proper divisors (1820101919).

31504620001 is a wasteful number, since it uses less digits than its factorization.

31504620001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18764015.

The product of its (nonzero) digits is 720, while the sum is 22.

The spelling of 31504620001 in words is "thirty-one billion, five hundred four million, six hundred twenty thousand, one".

Divisors: 1 23 73 1679 18763919 431570137 1369766087 31504620001