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103103231 = 7111339003
BaseRepresentation
bin1100010010100…
…11101011111111
321012000012001012
412021103223333
5202343300411
614121505435
72361235340
oct611235377
9235005035
10103103231
1153220a90
122a64227b
131848c13a
14d99c0c7
1590b918b
hex6253aff

103103231 has 8 divisors (see below), whose sum is σ = 128544384. Its totient is φ = 80340120.

The previous prime is 103103219. The next prime is 103103261. The reversal of 103103231 is 132301301.

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

It is a de Polignac number, because none of the positive numbers 2k-103103231 is a prime.

It is a super-2 number, since 2×1031032312 = 21260552485278722, 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 (103103261) 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, 669425 + ... + 669578.

It is an arithmetic number, because the mean of its divisors is an integer number (16068048).

Almost surely, 2103103231 is an apocalyptic number.

103103231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

103103231 is a deficient number, since it is larger than the sum of its proper divisors (25441153).

103103231 is a wasteful number, since it uses less digits than its factorization.

103103231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339021.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 103103231 is about 10153.9761177580. The cubic root of 103103231 is about 468.9113645100.

Adding to 103103231 its reverse (132301301), we get a palindrome (235404532).

The spelling of 103103231 in words is "one hundred three million, one hundred three thousand, two hundred thirty-one".

Divisors: 1 7 11 77 1339003 9373021 14729033 103103231