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140888831 = 318835147
BaseRepresentation
bin10000110010111…
…00101011111111
3100211002220010212
420121130223333
5242031420311
621551423035
73330351416
oct1031345377
9324086125
10140888831
1172589956
123b224a7b
132325ba95
14149d647d
15c57ec8b
hex865caff

140888831 has 8 divisors (see below), whose sum is σ = 145626624. Its totient is φ = 136163160.

The previous prime is 140888821. The next prime is 140888861. The reversal of 140888831 is 138888041.

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

It is not a de Polignac number, because 140888831 - 26 = 140888767 is a prime.

It is a super-2 number, since 2×1408888312 = 39699325401093122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140888801) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 24800 + ... + 29946.

It is an arithmetic number, because the mean of its divisors is an integer number (18203328).

Almost surely, 2140888831 is an apocalyptic number.

140888831 is a deficient number, since it is larger than the sum of its proper divisors (4737793).

140888831 is an equidigital number, since it uses as much as digits as its factorization.

140888831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6061.

The product of its (nonzero) digits is 49152, while the sum is 41.

The square root of 140888831 is about 11869.6601046534. The cubic root of 140888831 is about 520.3459618378.

The spelling of 140888831 in words is "one hundred forty million, eight hundred eighty-eight thousand, eight hundred thirty-one".

Divisors: 1 31 883 5147 27373 159557 4544801 140888831