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8061912431 = 171937973083
BaseRepresentation
bin1111000001000011…
…10000010101101111
3202210211220120210022
413200201300111233
5113002322144211
63411550432355
7403532060606
oct74041602557
922724816708
108061912431
113467815151
12168bb026bb
139b630c6b1
145669c2a3d
15322b79bdb
hex1e087056f

8061912431 has 16 divisors (see below), whose sum is σ = 8593923744. Its totient is φ = 7536451584.

The previous prime is 8061912427. The next prime is 8061912457. The reversal of 8061912431 is 1342191608.

It is a cyclic number.

It is not a de Polignac number, because 8061912431 - 22 = 8061912427 is a prime.

It is a super-2 number, since 2×80619124312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8061912391 and 8061912400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8061912631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2613416 + ... + 2616498.

It is an arithmetic number, because the mean of its divisors is an integer number (537120234).

Almost surely, 28061912431 is an apocalyptic number.

8061912431 is a deficient number, since it is larger than the sum of its proper divisors (532011313).

8061912431 is a wasteful number, since it uses less digits than its factorization.

8061912431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4090.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 8061912431 is about 89788.1530659808. The cubic root of 8061912431 is about 2005.1461166349.

The spelling of 8061912431 in words is "eight billion, sixty-one million, nine hundred twelve thousand, four hundred thirty-one".

Divisors: 1 17 193 797 3083 3281 13549 52411 153821 595019 2457151 2614957 10115323 41771567 474230143 8061912431