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88431001 = 751117751
BaseRepresentation
bin1010100010101…
…01100110011001
320011101202112021
411101111212121
5140114243001
612435214441
72122436221
oct521254631
9204352467
1088431001
1145a0a57a
1225747421
1315422a49
14ba5d081
157b6bba1
hex5455999

88431001 has 4 divisors (see below), whose sum is σ = 88549504. Its totient is φ = 88312500.

The previous prime is 88430987. The next prime is 88431011. The reversal of 88431001 is 10013488.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 88431001 - 217 = 88299929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88431011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58125 + ... + 59626.

It is an arithmetic number, because the mean of its divisors is an integer number (22137376).

Almost surely, 288431001 is an apocalyptic number.

It is an amenable number.

88431001 is a deficient number, since it is larger than the sum of its proper divisors (118503).

88431001 is a wasteful number, since it uses less digits than its factorization.

88431001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118502.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 88431001 is about 9403.7758905665. The cubic root of 88431001 is about 445.5210006883.

Adding to 88431001 its reverse (10013488), we get a palindrome (98444489).

The spelling of 88431001 in words is "eighty-eight million, four hundred thirty-one thousand, one".

Divisors: 1 751 117751 88431001