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70031012123 = 2919037126851
BaseRepresentation
bin100000100111000101…
…1000111000100011011
320200202120201000111202
41001032023013010123
52121410414341443
652101035344415
75026301532002
oct1011613070433
9220676630452
1070031012123
1127777753a26
12116a52b210b
1367b09b5217
143564ba9c39
151c4d1d97b8
hex104e2c711b

70031012123 has 8 divisors (see below), whose sum is σ = 72450251280. Its totient is φ = 67612064800.

The previous prime is 70031012071. The next prime is 70031012131. The reversal of 70031012123 is 32121013007.

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 70031012123 - 26 = 70031012059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70031012095 and 70031012104.

It is not an unprimeable number, because it can be changed into a prime (70031012153) 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, 488648 + ... + 615498.

It is an arithmetic number, because the mean of its divisors is an integer number (9056281410).

Almost surely, 270031012123 is an apocalyptic number.

70031012123 is a deficient number, since it is larger than the sum of its proper divisors (2419239157).

70031012123 is a wasteful number, since it uses less digits than its factorization.

70031012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145917.

The product of its (nonzero) digits is 252, while the sum is 20.

The spelling of 70031012123 in words is "seventy billion, thirty-one million, twelve thousand, one hundred twenty-three".

Divisors: 1 29 19037 126851 552073 3678679 2414862487 70031012123